diff --git a/curriculum/challenges/_meta/learn-present-perfect-while-talking-about-accessibility/meta.json b/curriculum/challenges/_meta/learn-present-perfect-while-talking-about-accessibility/meta.json
index fbd101d07fc..850b0cb4c2d 100644
--- a/curriculum/challenges/_meta/learn-present-perfect-while-talking-about-accessibility/meta.json
+++ b/curriculum/challenges/_meta/learn-present-perfect-while-talking-about-accessibility/meta.json
@@ -6,8 +6,512 @@
   "superBlock": "b1-english-for-developers",
   "challengeOrder": [
     {
-      "id": "66609f69b601725458228ffe",
-      "title": "Dialogue 1: I'm Tom"
+      "id": "67128f6a3550cf4f98e55f8b",
+      "title": "Dialogue 1: Improving Screen Reader Compatibility"
+    },
+    {
+      "id": "671274ffc6d0b8654e13affe",
+      "title": "Task 1"
+    },
+    {
+      "id": "67164bc464cdc045edaccc5f",
+      "title": "Task 2"
+    },
+    {
+      "id": "67164ce44ebb6446ec498fbd",
+      "title": "Task 3"
+    },
+    {
+      "id": "67164f8d2378f84851447534",
+      "title": "Task 4"
+    },
+    {
+      "id": "67165185a42acc499c6ada3d",
+      "title": "Task 5"
+    },
+    {
+      "id": "6716531210ee374ae822fe83",
+      "title": "Task 6"
+    },
+    {
+      "id": "671655545e5bfc4c3dfe9871",
+      "title": "Task 7"
+    },
+    {
+      "id": "67165855c3dd824eabc1b474",
+      "title": "Task 8"
+    },
+    {
+      "id": "6716593b4f24da4fac3154bf",
+      "title": "Task 9"
+    },
+    {
+      "id": "6717b20b952c096b3dee0834",
+      "title": "Task 10"
+    },
+    {
+      "id": "6717b6aa217d3d6ed6f83e53",
+      "title": "Task 11"
+    },
+    {
+      "id": "6717b8829e501c71a75f1c77",
+      "title": "Task 12"
+    },
+    {
+      "id": "6717ba3d37ec4e73a50878da",
+      "title": "Task 13"
+    },
+    {
+      "id": "6717bc8c826a697663bf8fb9",
+      "title": "Task 14"
+    },
+    {
+      "id": "6717c0dc8b764279dfc9326b",
+      "title": "Task 15"
+    },
+    {
+      "id": "6717c3557815a17d6369a778",
+      "title": "Task 16"
+    },
+    {
+      "id": "671a383a56179f510b83cc1e",
+      "title": "Task 17"
+    },
+    {
+      "id": "671a3c13a3d6b21a1b0008f7",
+      "title": "Task 18"
+    },
+    {
+      "id": "671a3dde9c50241c6c16e331",
+      "title": "Task 19"
+    },
+    {
+      "id": "671a3ed10fd6e81d06dd4690",
+      "title": "Task 20"
+    },
+    {
+      "id": "671a40b415343c1f26e0c005",
+      "title": "Task 21"
+    },
+    {
+      "id": "671a41b8576531207749bdae",
+      "title": "Task 22"
+    },
+    {
+      "id": "671a438ac97103231787ab5a",
+      "title": "Task 23"
+    },
+    {
+      "id": "671a45f9b4ee3325393f0d0b",
+      "title": "Task 24"
+    },
+    {
+      "id": "671a46fe18ae6a26c76f42f6",
+      "title": "Task 25"
+    },
+    {
+      "id": "671a4aeac046082b1bf6335b",
+      "title": "Task 26"
+    },
+    {
+      "id": "671a4e181afe602d37786dd8",
+      "title": "Task 27"
+    },
+    {
+      "id": "671b71da8e1b963c69b6d011",
+      "title": "Task 28"
+    },
+    {
+      "id": "671b769169e38f3fe57b141c",
+      "title": "Task 29"
+    },
+    {
+      "id": "671b77cf9ef25a416449b109",
+      "title": "Task 30"
+    },
+    {
+      "id": "671b7c10cd0d274552e7b686",
+      "title": "Task 31"
+    },
+    {
+      "id": "671b7dd730712747aa2d9974",
+      "title": "Task 32"
+    },
+    {
+      "id": "671b98e9b7c4854e93044e64",
+      "title": "Dialogue 2: Closed Captioning Challenges"
+    },
+    {
+      "id": "671b9986d2ac295047bde195",
+      "title": "Task 33"
+    },
+    {
+      "id": "671b9c3400ab12526ccc27e4",
+      "title": "Task 34"
+    },
+    {
+      "id": "671b9d6f13a6cf541934fb75",
+      "title": "Task 35"
+    },
+    {
+      "id": "671f403c1d4e8a5e046065a0",
+      "title": "Task 36"
+    },
+    {
+      "id": "671f456994635c6085054cbd",
+      "title": "Task 37"
+    },
+    {
+      "id": "671f46b8a64a336294268cf6",
+      "title": "Task 38"
+    },
+    {
+      "id": "671f4766b90543639b60a79d",
+      "title": "Task 39"
+    },
+    {
+      "id": "671f47b9343cd364309aa802",
+      "title": "Task 40"
+    },
+    {
+      "id": "671f4c29b6c10a677571c3e9",
+      "title": "Task 41"
+    },
+    {
+      "id": "671f897fb187b46d1457b4eb",
+      "title": "Task 42"
+    },
+    {
+      "id": "671f8ab3f5add66eb16be177",
+      "title": "Task 43"
+    },
+    {
+      "id": "671f8cdb0d31cb710d7ad031",
+      "title": "Task 44"
+    },
+    {
+      "id": "671f8e2ca90546729b1911fa",
+      "title": "Task 45"
+    },
+    {
+      "id": "671f92684454b37660c3f82a",
+      "title": "Task 46"
+    },
+    {
+      "id": "671f93c4885c6a77aabac13b",
+      "title": "Task 47"
+    },
+    {
+      "id": "671f9590517a747a18b10cad",
+      "title": "Task 48"
+    },
+    {
+      "id": "671f96ce37827d7bc7b64e23",
+      "title": "Task 49"
+    },
+    {
+      "id": "671f9804d863147de378c679",
+      "title": "Task 50"
+    },
+    {
+      "id": "671f9aa56463ab7f6d98325f",
+      "title": "Task 51"
+    },
+    {
+      "id": "671f9b8ce830ae8098504f26",
+      "title": "Task 52"
+    },
+    {
+      "id": "671f9ca66765d781de7213f3",
+      "title": "Task 53"
+    },
+    {
+      "id": "671f9e83b440da8486fdf76e",
+      "title": "Task 54"
+    },
+    {
+      "id": "6720cf38beae8c4f1d7af1c0",
+      "title": "Task 55"
+    },
+    {
+      "id": "6720e69c2152da7b9dad577e",
+      "title": "Task 56"
+    },
+    {
+      "id": "6720f18957013d8de8ebbe91",
+      "title": "Task 57"
+    },
+    {
+      "id": "6720f2d525d22693e3fe2a99",
+      "title": "Task 58"
+    },
+    {
+      "id": "6720f45529e496998cced6b6",
+      "title": "Task 59"
+    },
+    {
+      "id": "6720f45ff33dd69a10d14e9d",
+      "title": "Task 60"
+    },
+    {
+      "id": "6727896e74a7ba08f6db7c68",
+      "title": "Dialogue 3: Voice Command Features"
+    },
+    {
+      "id": "67278e07d5544c1a93f7f113",
+      "title": "Task 61"
+    },
+    {
+      "id": "67278fa39133d120afee631c",
+      "title": "Task 62"
+    },
+    {
+      "id": "672830d9aa2e0c2ff2fad7f8",
+      "title": "Task 63"
+    },
+    {
+      "id": "672833c79d024f37111a48ce",
+      "title": "Task 64"
+    },
+    {
+      "id": "672836d6ec0ae23f4724ccb1",
+      "title": "Task 65"
+    },
+    {
+      "id": "6728378c94eaf541fce8f334",
+      "title": "Task 66"
+    },
+    {
+      "id": "67289c4908f407948ef08a55",
+      "title": "Task 67"
+    },
+    {
+      "id": "67289e1748ed4b9623086332",
+      "title": "Task 68"
+    },
+    {
+      "id": "6728a193fccbc59b016a8584",
+      "title": "Task 69"
+    },
+    {
+      "id": "6728bf5cd59713a140c558be",
+      "title": "Task 70"
+    },
+    {
+      "id": "6728c0ac41d990a2f6de9ea4",
+      "title": "Task 71"
+    },
+    {
+      "id": "6728c22492994ca4deab5f93",
+      "title": "Task 72"
+    },
+    {
+      "id": "6728c369d38d3ea6634c1649",
+      "title": "Task 73"
+    },
+    {
+      "id": "6728c6fad8d9caa92837c75f",
+      "title": "Task 74"
+    },
+    {
+      "id": "672a192e685fba081cfbeb2d",
+      "title": "Task 75"
+    },
+    {
+      "id": "672a1c6ca33f8115728e7f79",
+      "title": "Task 76"
+    },
+    {
+      "id": "672a1e2fbec6a61bf477ea49",
+      "title": "Task 77"
+    },
+    {
+      "id": "672a21a4b40ed3279d513888",
+      "title": "Task 78"
+    },
+    {
+      "id": "672a2360e608aa2e32a1e08c",
+      "title": "Task 79"
+    },
+    {
+      "id": "672a251e826af634c1360078",
+      "title": "Task 80"
+    },
+    {
+      "id": "672a27098fa55c3bfa11c5fb",
+      "title": "Task 81"
+    },
+    {
+      "id": "673de712f2dc6db0cfe76b31",
+      "title": "Task 82"
+    },
+    {
+      "id": "673de859a60bb4b728b727b4",
+      "title": "Task 83"
+    },
+    {
+      "id": "673deb32b4eb12bd975aa2e8",
+      "title": "Task 84"
+    },
+    {
+      "id": "672a296a309d9c46658c071a",
+      "title": "Task 85"
+    },
+    {
+      "id": "672afc3d3758e25087697611",
+      "title": "Task 86"
+    },
+    {
+      "id": "672afe3809d2a55224868ea5",
+      "title": "Task 87"
+    },
+    {
+      "id": "673df0c78bdd11c7195010cb",
+      "title": "Task 88"
+    },
+    {
+      "id": "672b202ba00fc253ab8275f2",
+      "title": "Task 89"
+    },
+    {
+      "id": "672b25e2a59e2956bca1a42f",
+      "title": "Task 90"
+    },
+    {
+      "id": "672b307e7447905887103086",
+      "title": "Task 91"
+    },
+    {
+      "id": "672b33b15bd8bf5b2523772a",
+      "title": "Task 92"
+    },
+    {
+      "id": "672b42dafa37fe61e80a2b40",
+      "title": "Task 93"
+    },
+    {
+      "id": "672b4539b9ab5d645e7dcfb8",
+      "title": "Task 94"
+    },
+    {
+      "id": "672b46def9325065dbc7b29f",
+      "title": "Task 95"
+    },
+    {
+      "id": "672b4812ec997567058875da",
+      "title": "Task 96"
+    },
+    {
+      "id": "672b491aa3c094689007baf1",
+      "title": "Task 97"
+    },
+    {
+      "id": "672c8c2429273886b1519110",
+      "title": "Dialogue 4: Accessibility Training for Developers"
+    },
+    {
+      "id": "672cc5e1786cba9181ea64b6",
+      "title": "Task 98"
+    },
+    {
+      "id": "672cca3d15975a9390545877",
+      "title": "Task 99"
+    },
+    {
+      "id": "672ccc988693199500b4cdfd",
+      "title": "Task 100"
+    },
+    {
+      "id": "672cce96163ee1965d3e6133",
+      "title": "Task 101"
+    },
+    {
+      "id": "672cd0939d2cca9849f200d2",
+      "title": "Task 102"
+    },
+    {
+      "id": "672dc70c1f0bc8c822b0dfc6",
+      "title": "Task 103"
+    },
+    {
+      "id": "672dc928d8765dc9f923ca71",
+      "title": "Task 104"
+    },
+    {
+      "id": "672de8ad97d683d3734ce5cd",
+      "title": "Task 105"
+    },
+    {
+      "id": "672de9bfc24d99d49218eb41",
+      "title": "Task 106"
+    },
+    {
+      "id": "672debc75e32a8d6e2593eac",
+      "title": "Task 107"
+    },
+    {
+      "id": "672dec93f008b3d8169568e8",
+      "title": "Task 108"
+    },
+    {
+      "id": "672deeb8a3167fda01889d18",
+      "title": "Task 109"
+    },
+    {
+      "id": "672e0ec28d829ee2b5e909f3",
+      "title": "Task 110"
+    },
+    {
+      "id": "672e16bcc0d877e5d3eb7f4e",
+      "title": "Task 111"
+    },
+    {
+      "id": "672e17e63be5dce6ff5b9189",
+      "title": "Task 112"
+    },
+    {
+      "id": "672e18d6146c94e80107c6b9",
+      "title": "Task 113"
+    },
+    {
+      "id": "672e1bb0774f2fea953e9388",
+      "title": "Task 114"
+    },
+    {
+      "id": "672e1c3031816ceb9dccc66a",
+      "title": "Task 115"
+    },
+    {
+      "id": "672e1f1a51e86aed84df7c94",
+      "title": "Task 116"
+    },
+    {
+      "id": "672e1fff03af3aeed5d7a84b",
+      "title": "Task 117"
+    },
+    {
+      "id": "672f4b05585d501f533789b4",
+      "title": "Task 118"
+    },
+    {
+      "id": "672f606201263928a06b2a04",
+      "title": "Task 119"
+    },
+    {
+      "id": "672f630337512b2b62595731",
+      "title": "Task 120"
+    },
+    {
+      "id": "672f63cadac41a2c9b1897a1",
+      "title": "Task 121"
+    },
+    {
+      "id": "672f64ba4f91492e1192b829",
+      "title": "Task 122"
+    },
+    {
+      "id": "672f657580a34f2f78e278e2",
+      "title": "Task 123"
     }
   ],
   "helpCategory": "English",
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/66609f69b601725458228ffe.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/66609f69b601725458228ffe.md
deleted file mode 100644
index ab68e696c4b..00000000000
--- a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/66609f69b601725458228ffe.md
+++ /dev/null
@@ -1,58 +0,0 @@
----
-id: 66609f69b601725458228ffe
-title: "Dialogue 1: I'm Tom"
-challengeType: 21
-dashedName: dialogue-1-im-tom
----
-
-# --description--
-
-Watch the video below to understand the context of the upcoming lessons.
-
-# --assignment--
-
-Watch the video
-
-# --scene--
-
-```json
-{
-  "setup": {
-    "background": "chaos.png",
-    "characters": [
-      {
-        "character": "David",
-        "position": {"x":50,"y":80,"z":8},
-        "opacity": 0
-      }
-    ],
-    "audio": {
-      "filename": "1.1-1.mp3",
-      "startTime": 1,
-      "startTimestamp": 5.7,
-      "finishTimestamp": 6.48
-    }
-  },
-  "commands": [
-    {
-      "character": "David",
-      "opacity": 1,
-      "startTime": 0
-    },
-    {
-      "character": "David",
-      "startTime": 1,
-      "finishTime": 0.78,
-      "dialogue": {
-        "text": "I'm Tom.",
-        "align": "center"
-      }
-    },
-    {
-      "character": "Tom",
-      "opacity": 0,
-      "startTime": 1.28
-    }
-  ]
-}
-```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671274ffc6d0b8654e13affe.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671274ffc6d0b8654e13affe.md
new file mode 100644
index 00000000000..461dd1f49bd
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671274ffc6d0b8654e13affe.md
@@ -0,0 +1,98 @@
+---
+id: 671274ffc6d0b8654e13affe
+title: Task 1
+challengeType: 22
+dashedName: task-1
+---
+
+<!-- (Audio) Tom: Hey Sophie, have you been working on the screen reader updates recently? -->
+
+# --instructions--
+
+Listen to the audio to complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Hey Sophie, BLANK you BLANK BLANK on the screen reader updates recently?`
+
+## --blanks--
+
+`have`
+
+### --feedback--
+
+This word is used at the beginning of a question in the `Present Perfect Continuous` tense when asking about `you`.
+
+---
+
+`been`
+
+### --feedback--
+
+This word always follows `have` or `has` to form the `Present Perfect Continuous` tense.
+
+---
+
+`working`
+
+### --feedback--
+
+This is the main verb in its `-ing` form, which means actively putting effort or time into completing a task or project.
+
+# --explanation--
+
+The `Present Perfect Continuous` tense is used to describe actions that started in the past and are still happening. It focuses on the duration or continuation of the action. The structure of this tense is `have/has + been + verb(-ing)`. For example:
+
+- `We have been developing a new app for accessibility.` - This means the development started in the past and is still ongoing.
+
+- `He has been fixing bugs in the software for several hours.` - This means he started fixing the bugs earlier and is still working on it.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.16
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 5.16,
+      "dialogue": {
+        "text": "Hey, Sophie, have you been working on the screen reader updates recently?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 5.66
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67128f6a3550cf4f98e55f8b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67128f6a3550cf4f98e55f8b.md
new file mode 100644
index 00000000000..4c33e69f597
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67128f6a3550cf4f98e55f8b.md
@@ -0,0 +1,142 @@
+---
+id: 67128f6a3550cf4f98e55f8b
+title: "Dialogue 1: Improving Screen Reader Compatibility"
+challengeType: 21
+dashedName: dialogue-1-improving-screen-reader-compatibility
+---
+
+# --description--
+
+Watch the video below to understand the context of the upcoming lessons.
+
+# --assignment--
+
+Watch the video.
+
+# --scene--
+
+```json
+{
+ "setup": {
+   "background": "company2-center.png",
+   "characters": [
+     {
+       "character": "Tom",
+       "position": { "x": -25, "y": 0, "z": 1 }
+     },
+     {
+       "character": "Sophie",
+       "position": { "x": 125, "y": 0, "z": 1 }
+     }
+   ],
+   "audio": {
+     "filename": "B1_4-1.mp3",
+     "startTime": 1
+   },
+   "alwaysShowDialogue": true
+ },
+ "commands": [
+   {
+     "character": "Tom",
+     "position": { "x": 25, "y": 0, "z": 1 },
+     "startTime": 0
+   },
+   {
+     "character": "Sophie",
+     "position": { "x": 70, "y": 0, "z": 1 },
+     "startTime": 0.5
+   },
+   {
+     "character": "Tom",
+     "startTime": 1,
+     "finishTime": 5.16,
+     "dialogue": {
+       "text": "Hey, Sophie, have you been working on the screen reader updates recently?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Sophie",
+     "startTime": 5.72,
+     "finishTime": 9.92,
+     "dialogue": {
+       "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Sophie",
+     "startTime": 10.14,
+     "finishTime": 11.56,
+     "dialogue": {
+       "text": "How's the design side coming along?",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Tom",
+     "startTime": 11.88,
+     "finishTime": 15.82,
+     "dialogue": {
+       "text": "Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared.",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Sophie",
+     "startTime": 16.36,
+     "finishTime": 19.08,
+     "dialogue": {
+       "text": "That's good to hear. Do you think the users have noticed the improvements?",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Tom",
+     "startTime": 19.5,
+     "finishTime": 22.36,
+     "dialogue": {
+       "text": "I think so. We haven't been receiving as many negative comments.",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Sophie",
+     "startTime": 22.74,
+     "finishTime": 25.72,
+     "dialogue": {
+       "text": "That's a relief. How long do you think we'll need to keep making adjustments?",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Tom",
+     "startTime": 25.72,
+     "finishTime": 32,
+     "dialogue": {
+       "text": "Probably a few more weeks. We've been making steady progress, and I believe we're close to finalizing the major changes.",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Sophie",
+     "startTime": 32.42,
+     "finishTime": 35.04,
+     "dialogue": {
+       "text": "That's good news. It feels great to make our app more accessible.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Sophie",
+     "position": { "x": 125, "y": 0, "z": 1 },
+     "startTime": 35.54
+   },
+   {
+     "character": "Tom",
+     "position": { "x": -25, "y": 0, "z": 1 },
+     "startTime": 36.04
+   }
+ ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164bc464cdc045edaccc5f.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164bc464cdc045edaccc5f.md
new file mode 100644
index 00000000000..aa08da9c968
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164bc464cdc045edaccc5f.md
@@ -0,0 +1,52 @@
+---
+id: 67164bc464cdc045edaccc5f
+title: Task 2
+challengeType: 19
+dashedName: task-2
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which sentence uses the `Present Perfect Continuous` tense correctly?
+
+## --answers--
+
+`Sophie works on the screen reader updates recently.`
+
+### --feedback--
+
+This sentence is in the `Present Simple` tense, not the `Present Perfect Continuous`.
+
+---
+
+`Sophie has been working on the screen reader updates.`
+
+---
+
+`Sophie is working on the screen reader updates.`
+
+### --feedback--
+
+This sentence is in the `Present Continuous`, which describes an action happening right now, not over time.
+
+---
+
+`Sophie worked on the screen reader updates last week.`
+
+### --feedback--
+
+This sentence is in the `Past Simple`, which describes a completed action, not an ongoing one.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+The `Present Perfect Continuous` tense is used to describe actions that began in the past and are still happening. It is formed using `has/have been + verb(-ing)`.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164ce44ebb6446ec498fbd.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164ce44ebb6446ec498fbd.md
new file mode 100644
index 00000000000..5038af57f0f
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164ce44ebb6446ec498fbd.md
@@ -0,0 +1,54 @@
+---
+id: 67164ce44ebb6446ec498fbd
+title: Task 3
+challengeType: 19
+dashedName: task-3
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which option correctly forms a question in the `Present Perfect Continuous` tense?
+
+## --answers--
+
+`Have they working on the new software update?`
+
+### --feedback--
+
+This structure is incorrect. The word `been` is missing after `they`.
+
+---
+
+`Have they been testing the new software features?`
+
+---
+
+`They have been testing the new software update?`
+
+### --feedback--
+
+This is an affirmative sentence and not structured as a question.
+
+---
+
+`Are they been working on the new software features?`
+
+### --feedback--
+
+This structure is incorrect because `are` is used instead of `have` in the `Present Perfect Continuous`.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+The interrogative form of the `Present Perfect Continuous` is created by using `Have/Has + subject + been + verb(-ing)`. It is used to ask about actions that started in the past and are still happening. For example:
+
+`Have they been testing the new software features?` - Someone checks if the testing has been ongoing.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164f8d2378f84851447534.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164f8d2378f84851447534.md
new file mode 100644
index 00000000000..912bc1ea259
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67164f8d2378f84851447534.md
@@ -0,0 +1,96 @@
+---
+id: 67164f8d2378f84851447534
+title: Task 4
+challengeType: 22
+dashedName: task-4
+---
+
+<!-- (audio) Tom: Hey Sophie, have you been working on the screen reader updates recently? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Hey Sophie, have you been working on the BLANK BLANK BLANK recently?`
+
+## --blanks--
+
+`screen`
+
+### --feedback--
+
+This word refers to the display of a computer or device.
+
+---
+
+`reader`
+
+### --feedback--
+
+This word refers to a tool that reads the text aloud from the screen.
+
+---
+
+`updates`
+
+### --feedback--
+
+This word in the plural form refers to changes or improvements made to the software.
+
+# --explanation--
+
+A `screen reader` is a software tool that reads the text displayed on a computer or device aloud, making it accessible for users with visual impairments.
+
+`Updates` refer to improvements or changes made to software or applications to enhance their functionality or fix issues.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.16
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 5.16,
+      "dialogue": {
+        "text": "Hey, Sophie, have you been working on the screen reader updates recently?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 5.66
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165185a42acc499c6ada3d.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165185a42acc499c6ada3d.md
new file mode 100644
index 00000000000..15c1ba625a1
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165185a42acc499c6ada3d.md
@@ -0,0 +1,102 @@
+---
+id: 67165185a42acc499c6ada3d
+title: Task 5
+challengeType: 19
+dashedName: task-5
+---
+
+<!-- (audio) Tom: Hey Sophie, have you been working on the screen reader updates recently? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is Tom trying to find out?
+
+## --answers--
+
+If the screen reader updates are completely finished.
+
+### --feedback--
+
+Tom’s question is about an ongoing process, not whether the updates are fully completed.
+
+---
+
+If the screen reader updates have not started yet.
+
+### --feedback--
+
+Tom’s question suggests that the updates have already started, not that they haven’t begun.
+
+---
+
+If Sophie has been actively working on the screen reader updates.
+
+---
+
+If the screen reader updates will start next week.
+
+### --feedback--
+
+Tom is asking about recent work, not about plans for the future.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Tom uses the `Present Perfect Continuous` tense to ask if Sophie has been actively engaged in updating the screen reader. His question focuses on whether the work has been ongoing.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.16
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 5.16,
+      "dialogue": {
+        "text": "Hey, Sophie, have you been working on the screen reader updates recently?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 5.66
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716531210ee374ae822fe83.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716531210ee374ae822fe83.md
new file mode 100644
index 00000000000..3569fd6722c
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716531210ee374ae822fe83.md
@@ -0,0 +1,103 @@
+---
+id: 6716531210ee374ae822fe83
+title: Task 6
+challengeType: 19
+dashedName: task-6
+---
+
+<!-- (audio) Sophie: Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the design side coming along? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+Does Sophie work on the screen reader updates, and when did she begin?
+
+## --answers--
+
+No, Sophie doesn't on the screen reader updates.
+
+### --feedback--
+
+Incorrect. Sophie is involved in the updates.
+
+---
+
+Yes, Sophie started working on them last week.
+
+### --feedback--
+
+Incorrect. Sophie mentioned that she started working a few months ago, not last week.
+
+---
+
+Yes, Sophie started working on them recently.
+
+### --feedback--
+
+Not quite. While Sophie is currently working on the updates, she mentioned starting a few months ago.
+
+---
+
+Yes, Sophie started working on them a few months ago.
+
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Sophie is actively working on the screen reader updates, which are part of addressing feedback from the user survey. She specifies that she started this work a few months ago, indicating that it has been an ongoing task.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.62,
+      "finishTimestamp": 10.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 6.74,
+      "dialogue": {
+        "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How's the design side coming along?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 7.44
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671655545e5bfc4c3dfe9871.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671655545e5bfc4c3dfe9871.md
new file mode 100644
index 00000000000..5945848ef3e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671655545e5bfc4c3dfe9871.md
@@ -0,0 +1,108 @@
+---
+id: 671655545e5bfc4c3dfe9871
+title: Task 7
+challengeType: 22
+dashedName: task-7
+---
+
+<!-- (audio) Sophie: Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the design side coming along? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes, I started a few months ago. BLANK been BLANK the BLANK from our last user BLANK. How’s the design side coming along?`
+
+## --blanks--
+
+`We've`
+
+### --feedback--
+
+This is the contraction for `we have`. The first letter is capitalized.
+
+---
+
+`addressing`
+
+### --feedback--
+
+This word in `-ing` form means to deal with or respond to a problem or issue.
+
+---
+
+`feedback`
+
+### --feedback--
+
+It refers to the information or responses given by users about their experience.
+
+---
+
+`survey`
+
+### --feedback--
+
+This is a method of collecting information or opinions from users.
+
+# --explanation--
+
+To `address` means to take action to resolve an issue or respond to something. For example:
+
+`The developer is addressing the bug in the software.` - It shows that the developer is actively working to fix the problem.
+
+`Feedback` refers to opinions or comments given by users about their experience, often used to improve a product or service.
+
+`Survey` is a tool or method for collecting information or opinions from users, typically through questionnaires or interviews.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.62,
+      "finishTimestamp": 10.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 6.74,
+      "dialogue": {
+        "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How's the design side coming along?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 7.44
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165855c3dd824eabc1b474.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165855c3dd824eabc1b474.md
new file mode 100644
index 00000000000..e2089ae1fd9
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67165855c3dd824eabc1b474.md
@@ -0,0 +1,102 @@
+---
+id: 67165855c3dd824eabc1b474
+title: Task 8
+challengeType: 19
+dashedName: task-8
+---
+
+<!-- (audio) Sophie: Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the design side coming along? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Sophie say about the feedback?
+
+## --answers--
+
+She just started working on the updates last week.
+
+### --feedback--
+
+Sophie mentioned that she started working on it a few months ago.
+
+---
+
+She has been ignoring the user feedback from the survey.
+
+### --feedback--
+
+Sophie is addressing the feedback, which means she is actively working on it.
+
+---
+
+She completed all the work related to the user survey feedback.
+
+### --feedback--
+
+Sophie is still addressing the feedback, indicating that the work is ongoing.
+
+---
+
+She has been working on the user feedback from the survey for a few months.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Sophie explains that she started addressing the feedback from the user survey a few months ago and continues to work on it. The phrase `We've been addressing` indicates an ongoing effort to handle or respond to the feedback.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.62,
+      "finishTimestamp": 10.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 6.74,
+      "dialogue": {
+        "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How's the design side coming along?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 7.44
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716593b4f24da4fac3154bf.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716593b4f24da4fac3154bf.md
new file mode 100644
index 00000000000..1ce1230835a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6716593b4f24da4fac3154bf.md
@@ -0,0 +1,90 @@
+---
+id: 6716593b4f24da4fac3154bf
+title: Task 9
+challengeType: 22
+dashedName: task-9
+---
+
+<!-- (audio) Sophie: Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the design side coming along? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the BLANK side BLANK?`
+
+## --blanks--
+
+`design`
+
+### --feedback--
+
+This word refers to the layout or visual aspects of a product or interface.
+
+---
+
+`coming along`
+
+### --feedback--
+
+These two words together are used to ask about the progress or development of something. The first word is ended with `-ing`.
+
+# --explanation--
+
+`Design` relates to the visual layout and structure of the app or project.
+
+The phrase `come along` is often used to describe progress or improvement over time. For example:
+
+`The new website design is coming along nicely` - it means that the website design is progressing well.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.62,
+      "finishTimestamp": 10.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 6.74,
+      "dialogue": {
+        "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How's the design side coming along?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 7.44
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b20b952c096b3dee0834.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b20b952c096b3dee0834.md
new file mode 100644
index 00000000000..fadad1430c2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b20b952c096b3dee0834.md
@@ -0,0 +1,88 @@
+---
+id: 6717b20b952c096b3dee0834
+title: Task 10
+challengeType: 19
+dashedName: task-10
+---
+
+<!-- (audio) Sophie: Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How’s the design side coming along? -->
+
+<!-- SPEAKING --> 
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What’s the best answer to Sophie's question about the design side?
+
+## --answers--
+
+`It's going well.`
+
+---
+
+`I need to update the user survey.`
+
+### --feedback--
+
+This response is unrelated to the design side and does not answer Sophie's question.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+Sophie's question `How’s the design side coming along?` asks about the progress of the design work. The best answer should provide a relevant update.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.62,
+      "finishTimestamp": 10.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 6.74,
+      "dialogue": {
+        "text": "Yes, I started a few months ago. We've been addressing the feedback from our last user survey. How's the design side coming along?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 7.44
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b6aa217d3d6ed6f83e53.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b6aa217d3d6ed6f83e53.md
new file mode 100644
index 00000000000..c0067aa9a81
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b6aa217d3d6ed6f83e53.md
@@ -0,0 +1,104 @@
+---
+id: 6717b6aa217d3d6ed6f83e53
+title: Task 11
+challengeType: 22
+dashedName: task-11
+---
+
+<!-- (audio) Tom: Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Pretty well, actually. I've been BLANK the BLANK based on the BLANK you shared.`
+
+## --blanks--
+
+`tweaking`
+
+### --feedback--
+
+This verb in `-ing` form means making small adjustments or improvements to something.
+
+---
+
+`layouts`
+
+### --feedback--
+
+This word in the plural form refers to the arrangement or organization of elements in a design.
+
+---
+
+`guidelines`
+
+### --feedback--
+
+These are the rules or instructions that provide direction for how something should be done.
+
+# --explanation--
+
+To `tweak` means to make a slight adjustment or modification. For example:
+
+`The developer tweaked the code to improve the app’s performance.` - This means that the developer made small changes to the code to enhance how the app functions.
+
+`Layouts` are the arrangement or structure of elements on a page or interface. For example:
+
+`The layout of the homepage was changed to make it more user-friendly.` - This means that the arrangement of elements on the homepage was adjusted to make it easier for users to navigate.
+
+`Guidelines` are rules or principles that provide direction. For example:
+
+`The team followed the design guidelines to maintain consistency across pages.` - This means that the team followed specific rules to ensure a consistent appearance and structure across different pages.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 10.78,
+      "finishTimestamp": 14.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 5.04,
+      "dialogue": {
+        "text": "Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 5.54
+    }
+      ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b8829e501c71a75f1c77.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b8829e501c71a75f1c77.md
new file mode 100644
index 00000000000..f6d5f07a5b9
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717b8829e501c71a75f1c77.md
@@ -0,0 +1,102 @@
+---
+id: 6717b8829e501c71a75f1c77
+title: Task 12
+challengeType: 19
+dashedName: task-12
+---
+
+<!-- (audio) Tom: Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Tom mean?
+
+## --answers--
+
+Tom has redesigned the entire layout from scratch.
+
+### --feedback--
+
+Tom mentioned making small adjustments, not a complete redesign.
+
+---
+
+Tom has been making small changes to the layout according to the provided guidelines.
+
+---
+
+Tom is unsure about the guidelines Sophie provided.
+
+### --feedback--
+
+No, Tom is using the guidelines, not expressing confusion about them.
+
+---
+
+Tom hasn't made any changes to the layout yet.
+
+### --feedback--
+
+Tom has been actively making adjustments to the layout.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Tom's use of `tweaking` indicates that he is making minor adjustments rather than major changes. He is following the guidelines Sophie shared, which serve as a reference for the adjustments.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 10.78,
+      "finishTimestamp": 14.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 5.04,
+      "dialogue": {
+        "text": "Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 5.54
+    }
+      ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717ba3d37ec4e73a50878da.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717ba3d37ec4e73a50878da.md
new file mode 100644
index 00000000000..7044f322963
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717ba3d37ec4e73a50878da.md
@@ -0,0 +1,98 @@
+---
+id: 6717ba3d37ec4e73a50878da
+title: Task 13
+challengeType: 22
+dashedName: task-13
+---
+
+<!-- (audio) Sophie: That’s good to hear. Do you think the users have noticed the improvements? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`That’s good to hear. Do you think the users BLANK BLANK the BLANK?`
+
+## --blanks--
+
+`have`
+
+### --feedback--
+
+This word is part of the `Present Perfect` tense, indicating an action that already happened recently.
+
+---
+
+`noticed`
+
+### --feedback--
+
+This word is the main verb of the `Present Perfect` tense. It means to become aware of or recognize something.
+
+---
+
+`improvements`
+
+### --feedback--
+
+This word in the plural form refers to positive changes made to enhance the product or service.
+
+# --explanation--
+
+`Have noticed` is the `Present Perfect` tense, used to indicate that users may have become aware of or recognized something recently or over a period of time. It shows that the action of `noticing` could have started in the past and may still be relevant now.
+
+`Improvement` means a positive change or enhancement. Its plural form is `improvements`. For example:
+
+`The latest software update brought a great improvement in speed.` - In this example, `improvement` indicates that the update made the software faster and more efficient.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 15.36,
+      "finishTimestamp": 18.28
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.92,
+      "dialogue": {
+        "text": "That's good to hear. Do you think the users have noticed the improvements?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.42
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717bc8c826a697663bf8fb9.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717bc8c826a697663bf8fb9.md
new file mode 100644
index 00000000000..15d872c4e7a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717bc8c826a697663bf8fb9.md
@@ -0,0 +1,58 @@
+---
+id: 6717bc8c826a697663bf8fb9
+title: Task 14
+challengeType: 19
+dashedName: task-14
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Imagine you are working with a teammate on a software update. Your teammate says:
+
+- `I have tested the login feature.`
+
+- `I have been testing the login feature.`
+
+What is the difference in meaning between these two sentences?
+
+## --answers--
+
+The first sentence uses `Present Perfect Simple` tense, meaning the testing is complete, while the second sentence uses `Present Perfect Continuous` tense, meaning the testing started earlier and is still happening.
+
+---
+
+The first sentence means the teammate will start testing soon, while the second sentence means they will keep testing in the future.
+
+### --feedback--
+
+Both sentences describe actions that happened in the past or have been ongoing, not future actions.
+
+---
+
+The first sentence means the teammate started testing yesterday, while the second sentence means they started testing today.
+
+### --feedback--
+
+The tense differences do not indicate specific starting times, but rather whether the action is complete or ongoing.
+
+---
+
+Both sentences mean exactly the same thing.
+
+### --feedback--
+
+There is a clear difference: the first emphasizes completion, while the second emphasizes ongoing action.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The `Present Perfect Simple` tense (`I have tested the login feature`) suggests that the testing is complete and the result is important. The `Present Perfect Continuous` tense (`I have been testing the login feature`) indicates that the testing has been ongoing and may still be in progress, emphasizing the duration of the action.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c0dc8b764279dfc9326b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c0dc8b764279dfc9326b.md
new file mode 100644
index 00000000000..d2bdf1a766b
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c0dc8b764279dfc9326b.md
@@ -0,0 +1,102 @@
+---
+id: 6717c0dc8b764279dfc9326b
+title: Task 15
+challengeType: 19
+dashedName: task-15
+---
+
+<!-- (audio) Sophie: That’s good to hear. Do you think the users have noticed the improvements? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Sophie want to know?
+
+## --answers--
+
+If the users are happy with the design updates.
+
+### --feedback--
+
+Sophie’s focus is on whether users have observed the improvements, not if they are happy with the design.
+
+---
+
+If the users have left any negative comments recently.
+
+### --feedback--
+
+Sophie is asking if users have noticed the changes, not about recent comments.
+
+---
+
+If the users are aware of the improvements.
+
+---
+
+If the survey results have been analyzed.
+
+### --feedback--
+
+Sophie is interested in whether users have observed the improvements, not about the survey results.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Sophie’s question shows her curiosity about whether users are aware of the positive changes made to the product.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 15.36,
+      "finishTimestamp": 18.28
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.92,
+      "dialogue": {
+        "text": "That's good to hear. Do you think the users have noticed the improvements?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.42
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c3557815a17d6369a778.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c3557815a17d6369a778.md
new file mode 100644
index 00000000000..c0ea97751cb
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6717c3557815a17d6369a778.md
@@ -0,0 +1,102 @@
+---
+id: 6717c3557815a17d6369a778
+title: Task 16
+challengeType: 22
+dashedName: task-16
+---
+
+<!-- (audio) Tom: I think so. We haven’t been receiving as many negative comments. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`I think so. We BLANK been receiving as many BLANK BLANK.`
+
+## --blanks--
+
+`haven't`
+
+### --feedback--
+
+It's the contraction of `have not`, used to indicate something that has not happened recently.
+
+---
+
+`negative`
+
+### --feedback--
+
+This word describes something unfavorable or critical.
+
+---
+
+`comments`
+
+### --feedback--
+
+These are opinions or feedback shared by users, in the plural form.
+
+# --explanation--
+
+`Haven't` is the contraction of `have not`, used in the `Present Perfect` tense to indicate that an action has not occurred.
+
+`Negative` refers to something unfavorable or critical. For example:
+
+`The user left a negative review about the app’s performance.` - Here, `negative` describes the unfavorable nature of the review.
+
+`Comment` is an opinion or piece of feedback provided by someone. Its plural form is `comments`. For example:
+
+`I received a comment suggesting more features in the app.` - In this context, `comment` refers to feedback provided by a user about the app.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 18.4,
+      "finishTimestamp": 21.46
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 4.06,
+      "dialogue": {
+        "text": "I think so. We haven't been receiving as many negative comments.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 4.56
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a383a56179f510b83cc1e.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a383a56179f510b83cc1e.md
new file mode 100644
index 00000000000..79715619a67
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a383a56179f510b83cc1e.md
@@ -0,0 +1,132 @@
+---
+id: 671a383a56179f510b83cc1e
+title: Task 17
+challengeType: 19
+dashedName: task-17
+---
+
+<!-- (audio) Sophie: That’s good to hear. Do you think the users have noticed the improvements?
+
+Tom: I think so. We haven’t been receiving as many negative comments. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How does Tom respond to Sophie’s question about user feedback?
+
+## --answers--
+
+He says the users have noticed more negative comments.
+
+### --feedback--
+
+Tom actually mentions that they haven’t been receiving as many negative comments.
+
+---
+
+He says they haven’t been receiving as many negative comments.
+
+---
+
+He says the users have given positive comments.
+
+### --feedback--
+
+Tom does not specifically mention positive comments, only that the negative ones have decreased.
+
+---
+
+He says he’s waiting for more feedback.
+
+### --feedback--
+
+Tom is talking about the current trend of fewer negative comments, not waiting for more feedback.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Tom's response, `We haven’t been receiving as many negative comments`, uses the `Present Perfect Continuous` in the negative form. This tense is formed by `haven’t/hasn’t + been + verb(-ing)` and is used to describe actions that have not been happening over a period of time. In this case, it shows that fewer negative comments have been received over time, indicating a possible improvement.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      },
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 15.36,
+      "finishTimestamp": 21.36
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.72,
+      "dialogue": {
+        "text": "That's good to hear. Do you think the users have noticed the improvements?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 3.93
+    },
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 3.93
+    },
+    {
+      "character": "Tom",
+      "startTime": 4.14,
+      "finishTime": 7,
+      "dialogue": {
+        "text": "I think so. We haven't been receiving as many negative comments.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 7.5
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3c13a3d6b21a1b0008f7.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3c13a3d6b21a1b0008f7.md
new file mode 100644
index 00000000000..9c830e0fb11
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3c13a3d6b21a1b0008f7.md
@@ -0,0 +1,92 @@
+---
+id: 671a3c13a3d6b21a1b0008f7
+title: Task 18
+challengeType: 22
+dashedName: task-18
+---
+
+<!-- (audio) Sophie: That’s a relief. How long do you think we’ll need to keep making adjustments? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`That's a BLANK. How long do you think we'll need to keep making BLANK?`
+
+## --blanks--
+
+`relief`
+
+### --feedback--
+
+This word is used to express a feeling of comfort after a concern.
+
+---
+
+`adjustments`
+
+### --feedback--
+
+This refers to changes made to improve or adapt something. It's plural form.
+
+# --explanation--
+
+`Relief` means a feeling of comfort or reassurance when something concerning improves. For example:
+
+`It was a relief to hear that the project was approved.` - `Relief` describes the comfort felt after getting good news about the project.
+
+`Adjustments` means small changes made to improve or adapt something. For example,
+
+`We made adjustments to the app’s layout for better user experience.` - `Adjustments` refers to the changes made to improve how users interact with the app.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 21.74,
+      "finishTimestamp": 24.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.98,
+      "dialogue": {
+        "text": "That's a relief. How long do you think we'll need to keep making adjustments?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.48
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3dde9c50241c6c16e331.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3dde9c50241c6c16e331.md
new file mode 100644
index 00000000000..de3b5acf882
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3dde9c50241c6c16e331.md
@@ -0,0 +1,102 @@
+---
+id: 671a3dde9c50241c6c16e331
+title: Task 19
+challengeType: 19
+dashedName: task-19
+---
+
+<!-- (audio) Sophie: That’s a relief. How long do you think we’ll need to keep making adjustments? -->
+
+# --instructions--
+
+Listen to the audio and select the answer.
+
+# --questions--
+
+## --text--
+
+How does Sophie feel about the situation?
+
+## --answers--
+
+She is worried about the adjustments.
+
+### --feedback--
+
+Sophie expresses `relief`, indicating that she feels more at ease.
+
+---
+
+She is confused about the adjustments.
+
+### --feedback--
+
+Sophie doesn't show confusion; instead, she feels better about the situation.
+
+---
+
+She feels good about the progress.
+
+---
+
+She is frustrated with the adjustments.
+
+### --feedback--
+
+Sophie does not express frustration. She mentions feeling relieved instead.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Sophie’s use of `That’s a relief` indicates that she feels better or more comfortable about the progress being made, rather than feeling worried, confused, or frustrated.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 21.74,
+      "finishTimestamp": 24.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.98,
+      "dialogue": {
+        "text": "That's a relief. How long do you think we'll need to keep making adjustments?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.48
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3ed10fd6e81d06dd4690.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3ed10fd6e81d06dd4690.md
new file mode 100644
index 00000000000..f58008dac2f
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a3ed10fd6e81d06dd4690.md
@@ -0,0 +1,102 @@
+---
+id: 671a3ed10fd6e81d06dd4690
+title: Task 20
+challengeType: 19
+dashedName: task-20
+---
+
+<!-- (audio) Sophie: That’s a relief. How long do you think we’ll need to keep making adjustments? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Sophie want to know?
+
+## --answers--
+
+She wants to know why the adjustments are necessary.
+
+### --feedback--
+
+Sophie is not asking about the reason for the adjustments.
+
+---
+
+She wants to know how many adjustments have been made so far.
+
+### --feedback--
+
+Sophie is asking about the future duration of the adjustments, not the number made.
+
+---
+
+She wants to know how much longer they need to keep making adjustments.
+
+---
+
+She wants to know if the adjustments have been effective.
+
+### --feedback--
+
+Sophie is not asking about the effectiveness of the adjustments.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Sophie’s question shows that she is trying to understand the time required to continue making changes, focusing on the duration rather than the reasons or results.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 21.74,
+      "finishTimestamp": 24.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.98,
+      "dialogue": {
+        "text": "That's a relief. How long do you think we'll need to keep making adjustments?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.48
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a40b415343c1f26e0c005.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a40b415343c1f26e0c005.md
new file mode 100644
index 00000000000..69f47f8b11e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a40b415343c1f26e0c005.md
@@ -0,0 +1,88 @@
+---
+id: 671a40b415343c1f26e0c005
+title: Task 21
+challengeType: 19
+dashedName: task-21
+---
+
+<!-- (audio) Sophie: That’s a relief. How long do you think we’ll need to keep making adjustments? -->
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What's the best answer to Sophie's question?
+
+## --answers--
+
+`Probably because it's important for the project.`
+
+### --feedback--
+
+This does not answer `how long`, as it provides a reason instead of a time frame.
+
+---
+
+`Probably for another two weeks.`
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Sophies uses `how long` to ask for an estimated duration or time frame. An appropriate response would include a specific amount of time, such as `a few days`, `two weeks`, or `until the end of the month`.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 21.74,
+      "finishTimestamp": 24.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.98,
+      "dialogue": {
+        "text": "That's a relief. How long do you think we'll need to keep making adjustments?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.48
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a41b8576531207749bdae.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a41b8576531207749bdae.md
new file mode 100644
index 00000000000..81b269862a7
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a41b8576531207749bdae.md
@@ -0,0 +1,92 @@
+---
+id: 671a41b8576531207749bdae
+title: Task 22
+challengeType: 22
+dashedName: task-22
+---
+
+<!-- (audio) Tom: Probably a few more weeks. We've been making steady progress, and I believe we’re close to finalizing the major changes. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Probably a few more weeks. We've been making steady BLANK, and I believe we’re close to BLANK the major changes.`
+
+## --blanks--
+
+`progress`
+
+### --feedback--
+
+This word refers to improvement or development over time.
+
+---
+
+`finalizing`
+
+### --feedback--
+
+This verb in `-ing` form means completing or finishing something.
+
+# --explanation--
+
+`Progress` indicates improvement or development over time. For example:
+
+`The team has made good progress on the new feature.` - The team has made advancements in developing the feature.
+
+`Finalize` means to complete or finish something. For example:
+
+`We need to finalize the project details before the deadline.` - You need to complete the remaining tasks to meet the deadline.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.82,
+      "finishTimestamp": 31
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 7.18,
+      "dialogue": {
+        "text": "Probably a few more weeks. We've been making steady progress, and I believe we're close to finalizing the major changes.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 7.68
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a438ac97103231787ab5a.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a438ac97103231787ab5a.md
new file mode 100644
index 00000000000..325b6884960
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a438ac97103231787ab5a.md
@@ -0,0 +1,102 @@
+---
+id: 671a438ac97103231787ab5a
+title: Task 23
+challengeType: 19
+dashedName: task-23
+---
+
+<!-- (audio) Tom: Probably a few more weeks. We've been making steady progress, and I believe we’re close to finalizing the major changes. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is Tom trying to convey about the team's current progress and timeline?
+
+## --answers--
+
+The team has just started working on the changes.
+
+### --feedback--
+
+Tom mentions that they are nearing the completion of the changes, not just starting them.
+
+---
+
+The team has been making consistent progress, but they still need a few more weeks to finish.
+
+---
+
+The team is making good progress and expects to finish very soon.
+
+### --feedback--
+
+While they are progressing well, Tom indicates that it will still take a few more weeks.
+
+---
+
+The team will need several months to complete the changes.
+
+### --feedback--
+
+Tom estimates that they will need only a few more weeks, not several months.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Tom’s statement indicates that the team has been working consistently and expects to complete the changes in a few more weeks.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Tom",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.82,
+      "finishTimestamp": 31
+    }
+  },
+  "commands": [
+    {
+      "character": "Tom",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Tom",
+      "startTime": 1,
+      "finishTime": 7.18,
+      "dialogue": {
+        "text": "Probably a few more weeks. We've been making steady progress, and I believe we're close to finalizing the major changes.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Tom",
+      "opacity": 0,
+      "startTime": 7.68
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a45f9b4ee3325393f0d0b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a45f9b4ee3325393f0d0b.md
new file mode 100644
index 00000000000..7e6517f365e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a45f9b4ee3325393f0d0b.md
@@ -0,0 +1,80 @@
+---
+id: 671a45f9b4ee3325393f0d0b
+title: Task 24
+challengeType: 22
+dashedName: task-24
+---
+
+<!-- (audio) Sophie: That’s good news! It feels great to make our app more accessible. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`That’s good news! It feels great to make our app more BLANK.`
+
+## --blanks--
+
+`accessible`
+
+### --feedback--
+
+This word means easy to use or reach, especially for people with different needs.
+
+# --explanation--
+
+`Accessible` describes something that is easy to use, enter, or reach, especially for people with different abilities. For example:
+
+`The website was redesigned to be more accessible for visually impaired users.` - The website has been adjusted to be easier for people with visual impairments to use.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.42,
+      "finishTimestamp": 34.24
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.82,
+      "dialogue": {
+        "text": "That's good news. It feels great to make our app more accessible.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.32
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a46fe18ae6a26c76f42f6.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a46fe18ae6a26c76f42f6.md
new file mode 100644
index 00000000000..ce5bea37581
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a46fe18ae6a26c76f42f6.md
@@ -0,0 +1,103 @@
+---
+id: 671a46fe18ae6a26c76f42f6
+title: Task 25
+challengeType: 19
+dashedName: task-25
+---
+
+<!-- (audio) Sophie: That’s good news! It feels great to make our app more accessible. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Sophie mean?
+
+## --answers--
+
+She is happy about making the app look more colorful.
+
+### --feedback--
+
+No, `accessible` doesn’t refer to colors or design aesthetics. It means making the app easier for all users, including those with different needs, to use.
+
+---
+
+She is pleased that the app is becoming easier for everyone to use, including users with disabilities.
+
+---
+
+She thinks the app’s loading speed has improved significantly.
+
+### --feedback--
+
+No, `accessible` means making the app usable by more people, not about improving speed.
+
+---
+
+She is excited about adding more features to the app.
+
+### --feedback--
+
+Sophie is focused on making the app easier to use for all, which is what `accessible` means.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+When Sophie says `It feels great to make our app more accessible`, she’s emphasizing the importance of making the app easier to use for all users, regardless of their abilities. Being `accessible` or `accessibility` aims to ensure that everyone, including people with disabilities, can interact with the app effectively.
+
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-center.png",
+    "characters": [
+      {
+        "character": "Sophie",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-1.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.42,
+      "finishTimestamp": 34.24
+    }
+  },
+  "commands": [
+    {
+      "character": "Sophie",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Sophie",
+      "startTime": 1,
+      "finishTime": 3.82,
+      "dialogue": {
+        "text": "That's good news. It feels great to make our app more accessible.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Sophie",
+      "opacity": 0,
+      "startTime": 4.32
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4aeac046082b1bf6335b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4aeac046082b1bf6335b.md
new file mode 100644
index 00000000000..26be04f9f28
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4aeac046082b1bf6335b.md
@@ -0,0 +1,52 @@
+---
+id: 671a4aeac046082b1bf6335b
+title: Task 26
+challengeType: 19
+dashedName: task-26
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which example best demonstrates what `accessibility` means in software development?
+
+## --answers--
+
+An app is designed to include features like voice commands and screen readers to help visually impaired users navigate.
+
+---
+
+An app adds more advanced settings for power users who want to customize features.
+
+### --feedback--
+
+This focuses on customization for advanced users, not on making the app accessible for all users.
+
+---
+
+An app introduces a new payment gateway to make transactions faster.
+
+### --feedback--
+
+While this improves functionality, it doesn’t relate to making the app accessible to users with different needs.
+
+---
+
+An app offers a wider range of color options to improve its visual appeal.
+
+### --feedback--
+
+Adding more colors improves design aesthetics but does not necessarily enhance accessibility for all users.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+In software development, `accessibility` refers to designing apps in a way that everyone, including people with disabilities, can use them easily. Examples include adding voice commands, screen readers, or features like keyboard navigation for users with limited mobility.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4e181afe602d37786dd8.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4e181afe602d37786dd8.md
new file mode 100644
index 00000000000..d8fb1229953
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671a4e181afe602d37786dd8.md
@@ -0,0 +1,76 @@
+---
+id: 671a4e181afe602d37786dd8
+title: Task 27
+challengeType: 22
+dashedName: task-27
+---
+
+<!-- REVIEW -->
+
+# --description--
+
+This is a review of the entire dialogue you just studied.
+
+# --instructions--
+
+Place the following phrases in the correct spot: `negative comments`, `been addressing`, `That’s a relief`, `more accessible`, and `keep making adjustments`.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Tom: Hey Sophie, have you been working on the screen reader updates recently?`
+
+`Sophie: Yes, I started a few months ago. We've BLANK the feedback from our last user survey. How’s the design side coming along?`
+
+`Tom: Pretty well, actually. I've been tweaking the layouts based on the guidelines you shared.`
+
+`Sophie: That’s good to hear. Do you think the users have noticed the improvements?`
+
+`Tom: I think so. We haven’t been receiving as many BLANK.`
+
+`Sophie: BLANK. How long do you think we’ll need to BLANK?`
+
+`Tom: Probably a few more weeks. We've been making steady progress, and I believe we’re close to finalizing the major changes.`
+
+`Sophie: That’s good news! It feels great to make our app BLANK.`
+
+## --blanks--
+
+`been addressing`
+
+### --feedback--
+
+This phrase refers to working on something.
+
+---
+
+`negative comments`
+
+### --feedback--
+
+This phrase refers to unfavorable feedback from users.
+
+---
+
+`That’s a relief`
+
+### --feedback--
+
+This phrase means feeling reassured after hearing good news. The first word is capitalized.
+
+---
+
+`keep making adjustments`
+
+### --feedback--
+
+This phrase means continuing to make changes or improvements.
+
+---
+
+`more accessible`
+
+### --feedback--
+
+This phrase refers to being more easier for all users, including those with disabilities, to use.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b71da8e1b963c69b6d011.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b71da8e1b963c69b6d011.md
new file mode 100644
index 00000000000..735442737c2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b71da8e1b963c69b6d011.md
@@ -0,0 +1,66 @@
+---
+id: 671b71da8e1b963c69b6d011
+title: Task 28
+challengeType: 19
+dashedName: task-28
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Tom and Sophie are working to make their app easier to use for people who have visual impairments. They have made adjustments to help screen readers, which are tools that read the screen aloud.`
+
+`Recently, they added special labels to buttons, menus, and forms, so screen readers can understand these parts better. They also improved the way headings, lists, and tables are organized, making the layouts easier for users to move through the app.`
+
+`Tom has been testing these improvements using popular screen readers, while Sophie has been focusing on tweaking the app’s text-to-speech function. They also increased the contrast, which helps users see different sections more clearly.`
+
+`Sophie still wonders, “Have we done enough to make our app accessible?” They plan to conduct some surveys and add features like adjustable colors and keyboard shortcuts to make the app even more user-friendly.`
+
+What changes have Tom and Sophie made to help screen readers?
+
+## --answers--
+
+They added more images to the app.
+
+### --feedback--
+
+Adding images is not mentioned as part of the changes for screen readers.
+
+---
+
+They added special labels to buttons, menus, and forms.
+
+---
+
+They made the app load faster.
+
+### --feedback--
+
+The focus is on making the app easier to use with screen readers, not on speed.
+
+---
+
+They changed the app’s language settings.
+
+### --feedback--
+
+Language settings are not mentioned in the paragraph.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, focus on the part of the paragraph that describes the features introduced to improve screen reader compatibility. 
+
+The paragraph mentions that Tom and Sophie added `special labels to buttons, menus, and forms` and used semantic HTML to help screen readers interpret elements correctly.
+
+Look for an option that highlights these specific changes, as they are aimed at making the app more accessible for users with visual impairments.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b769169e38f3fe57b141c.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b769169e38f3fe57b141c.md
new file mode 100644
index 00000000000..fb59495032f
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b769169e38f3fe57b141c.md
@@ -0,0 +1,66 @@
+---
+id: 671b769169e38f3fe57b141c
+title: Task 29
+challengeType: 19
+dashedName: task-29
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Tom and Sophie are working to make their app easier to use for people who have visual impairments. They have made adjustments to help screen readers, which are tools that read the screen aloud.`
+
+`Recently, they added special labels to buttons, menus, and forms, so screen readers can understand these parts better. They also improved the way headings, lists, and tables are organized, making the layouts easier for users to move through the app.`
+
+`Tom has been testing these improvements using popular screen readers, while Sophie has been focusing on tweaking the app’s text-to-speech function. They also increased the contrast, which helps users see different sections more clearly.`
+
+`Sophie still wonders, “Have we done enough to make our app accessible?” They plan to conduct some surveys and add features like adjustable colors and keyboard shortcuts to make the app even more user-friendly.`
+
+What was Tom’s main role in improving screen reader compatibility?
+
+## --answers--
+
+He tested the new features to make sure they worked well.
+
+---
+
+He designed the app’s new color scheme.
+
+### --feedback--
+
+Tom’s focus was on testing the screen reader features, not designing the color scheme.
+
+---
+
+He translated the app into different languages.
+
+### --feedback--
+
+Translating the app was not part of Tom’s role in this context.
+
+---
+
+He added more images to the app.
+
+### --feedback--
+
+Tom’s main task was to test screen reader compatibility, not to add images.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+To find the correct answer, pay attention to the section that explains Tom’s main role in improving the app.
+
+The paragraph states that Tom `has been testing these improvements` to ensure they were effective for screen reader users, which shows his focus on checking the compatibility of these updates.
+
+Look for an option that reflects Tom's role in testing the new features to ensure their functionality.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b77cf9ef25a416449b109.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b77cf9ef25a416449b109.md
new file mode 100644
index 00000000000..e599f1a1eed
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b77cf9ef25a416449b109.md
@@ -0,0 +1,66 @@
+---
+id: 671b77cf9ef25a416449b109
+title: Task 30
+challengeType: 19
+dashedName: task-30
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Tom and Sophie are working to make their app easier to use for people who have visual impairments. They have made adjustments to help screen readers, which are tools that read the screen aloud.`
+
+`Recently, they added special labels to buttons, menus, and forms, so screen readers can understand these parts better. They also improved the way headings, lists, and tables are organized, making the layouts easier for users to move through the app.`
+
+`Tom has been testing these improvements using popular screen readers, while Sophie has been focusing on tweaking the app’s text-to-speech function. They also increased the contrast, which helps users see different sections more clearly.`
+
+`Sophie still wonders, “Have we done enough to make our app accessible?” They plan to conduct some surveys and add features like adjustable colors and keyboard shortcuts to make the app even more user-friendly.`
+
+What specific improvement did Sophie make to help users understand spoken content better?
+
+## --answers--
+
+She added more colorful icons to the app.
+
+### --feedback--
+
+Adding colorful icons is not related to spoken content or screen reader compatibility.
+
+---
+
+She worked on making the app’s speech output clearer.
+
+---
+
+She changed the app’s loading speed.
+
+### --feedback--
+
+Changing the loading speed is not related to improving spoken content.
+
+---
+
+She redesigned the app’s interface layout.
+
+### --feedback--
+
+Sophie's work specifically aimed to improve how users hear and understand the spoken content.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Focus on the part that describes Sophie’s efforts to enhance screen reader compatibility.
+
+The paragraph mentions that her focus is `tweaking the app’s text-to-speech function` to help users better understand spoken content from the app.
+
+Look for an option that aligns with Sophie’s specific task of enhancing the app’s text-to-speech functionality.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7c10cd0d274552e7b686.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7c10cd0d274552e7b686.md
new file mode 100644
index 00000000000..8b66d6f92b6
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7c10cd0d274552e7b686.md
@@ -0,0 +1,66 @@
+---
+id: 671b7c10cd0d274552e7b686
+title: Task 31
+challengeType: 19
+dashedName: task-31
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Tom and Sophie are working to make their app easier to use for people who have visual impairments. They have made adjustments to help screen readers, which are tools that read the screen aloud.`
+
+`Recently, they added special labels to buttons, menus, and forms, so screen readers can understand these parts better. They also improved the way headings, lists, and tables are organized, making the layouts easier for users to move through the app.`
+
+`Tom has been testing these improvements using popular screen readers, while Sophie has been focusing on tweaking the app’s text-to-speech function. They also increased the contrast, which helps users see different sections more clearly.`
+
+`Sophie still wonders, “Have we done enough to make our app accessible?” They plan to conduct some surveys and add features like adjustable colors and keyboard shortcuts to make the app even more user-friendly.`
+
+What is Sophie concerned about regarding the app’s accessibility?
+
+## --answers--
+
+Whether users like the new color scheme.
+
+### --feedback--
+
+Sophie’s concern is about making the app accessible overall, not about color preferences.
+
+---
+
+Whether the app’s speed has improved enough.
+
+### --feedback--
+
+Sophie’s focus is on making the app more accessible, not its speed.
+
+---
+
+Whether they have enough user surveys completed.
+
+### --feedback--
+
+Sophie’s concern is not about the number of surveys but about the app's overall accessibility.
+
+---
+
+Whether they have done enough to make the app accessible.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+To find the correct answer, focus on Sophie’s concern mentioned in the paragraph.
+
+The paragraph states that Sophie wonders, `Have we done enough to make our app accessible?` This indicates her focus on overall accessibility improvements.
+
+Look for an option that reflects Sophie’s concern about making the app accessible for users.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7dd730712747aa2d9974.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7dd730712747aa2d9974.md
new file mode 100644
index 00000000000..5cf4154e4bb
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b7dd730712747aa2d9974.md
@@ -0,0 +1,66 @@
+---
+id: 671b7dd730712747aa2d9974
+title: Task 32
+challengeType: 19
+dashedName: task-32
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Tom and Sophie are working to make their app easier to use for people who have visual impairments. They have made adjustments to help screen readers, which are tools that read the screen aloud.`
+
+`Recently, they added special labels to buttons, menus, and forms, so screen readers can understand these parts better. They also improved the way headings, lists, and tables are organized, making the layouts easier for users to move through the app.`
+
+`Tom has been testing these improvements using popular screen readers, while Sophie has been focusing on tweaking the app’s text-to-speech function. They also increased the contrast, which helps users see different sections more clearly.`
+
+`Sophie still wonders, “Have we done enough to make our app accessible?” They plan to conduct some surveys and add features like adjustable colors and keyboard shortcuts to make the app even more user-friendly.`
+
+What might be Tom and Sophie’s next step to improve accessibility?
+
+## --answers--
+
+Adding more images to make the app look better.
+
+### --feedback--
+
+Their focus is on enhancing accessibility, not just improving visual design.
+
+---
+
+Introducing features like adjustable colors and keyboard shortcuts.
+
+---
+
+Increasing the app’s speed for faster navigation.
+
+### --feedback--
+
+While speed is important, their next steps are focused on accessibility features.
+
+---
+
+Adding more animations to make the app more interactive.
+
+### --feedback--
+
+Adding animations is not related to improving accessibility for users.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, focus on the part that talks about future improvements.
+
+The paragraph mentions that Tom and Sophie plan to add `adjustable colors and keyboard shortcuts` to further enhance accessibility.
+
+Look for an option that aligns with these upcoming features aimed at making the app easier to use for all users.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b98e9b7c4854e93044e64.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b98e9b7c4854e93044e64.md
new file mode 100644
index 00000000000..582044e60a2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b98e9b7c4854e93044e64.md
@@ -0,0 +1,170 @@
+---
+id: 671b98e9b7c4854e93044e64
+title: "Dialogue 2: Closed Captioning Challenges"
+challengeType: 21
+dashedName: dialogue-2-closed-captioning-challenges
+---
+
+# --description--
+
+Watch the video below to understand the context of the upcoming lessons.
+
+# --assignment--
+
+Watch the video.
+
+# --scene--
+
+
+```json
+{
+ "setup": {
+   "background": "interview-room3.png",
+   "characters": [
+     {
+       "character": "Alice",
+       "position": { "x": -25, "y": 0, "z": 1 }
+     },
+     {
+       "character": "James",
+       "position": { "x": 125, "y": 0, "z": 1 }
+     }
+   ],
+   "audio": {
+     "filename": "B1_4-2.mp3",
+     "startTime": 1
+   },
+   "alwaysShowDialogue": true
+ },
+ "commands": [
+   {
+     "character": "Alice",
+     "position": { "x": 25, "y": 0, "z": 1 },
+     "startTime": 0
+   },
+   {
+     "character": "James",
+     "position": { "x": 70, "y": 0, "z": 1 },
+     "startTime": 0.5
+   },
+   {
+     "character": "Alice",
+     "startTime": 1,
+     "finishTime": 4.9,
+     "dialogue": {
+       "text": "James, have you heard about the closed captioning issue on our video platform?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 5.34,
+     "finishTime": 9.26,
+     "dialogue": {
+       "text": "Yes, for some reason it hasn't been displaying correctly for some users.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 9.52,
+     "finishTime": 13.24,
+     "dialogue": {
+       "text": "The captions are misaligned and out of sync, which isn't good for accessibility.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Alice",
+     "startTime": 13.94,
+     "finishTime": 17.06,
+     "dialogue": {
+       "text": "Exactly. Do you know if it's been affecting all the videos or just a few?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 17.6,
+     "finishTime": 19.44,
+     "dialogue": {
+       "text": "It seems to be affecting several videos.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 19.78,
+     "finishTime": 24.82,
+     "dialogue": {
+       "text": "Our quality assurance team has been testing the platform and noticed that the captions aren't syncing properly.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Alice",
+     "startTime": 25.12,
+     "finishTime": 27.32,
+     "dialogue": {
+       "text": "That's concerning. Have they found out why it's happening?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 27.32,
+     "finishTime": 32.54,
+     "dialogue": {
+       "text": "Not yet. The synchronization code hasn't been updated in a while, which might be part of the problem.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 33.12,
+     "finishTime": 36.94,
+     "dialogue": {
+       "text": "Also, the captions haven't been rendering consistently across different devices.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Alice",
+     "startTime": 37.38,
+     "finishTime": 38.4,
+     "dialogue": {
+       "text": "Is there a plan to fix it?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 38.66,
+     "finishTime": 42.92,
+     "dialogue": {
+       "text": "We're working on it. The development team hasn't found a definitive solution yet,",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 43.08,
+     "finishTime": 44.86,
+     "dialogue": {
+       "text": "but they're narrowing down the possibilities.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "position": { "x": 125, "y": 0, "z": 1 },
+     "startTime": 45.36
+   },
+   {
+     "character": "Alice",
+     "position": { "x": -25, "y": 0, "z": 1 },
+     "startTime": 45.86
+   }
+ ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9986d2ac295047bde195.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9986d2ac295047bde195.md
new file mode 100644
index 00000000000..b7253a31fd1
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9986d2ac295047bde195.md
@@ -0,0 +1,96 @@
+---
+id: 671b9986d2ac295047bde195
+title: Task 33
+challengeType: 22
+dashedName: task-33
+---
+
+<!-- (Audio) Alice: James, have you heard about the closed captioning issue on our video platform? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`James, BLANK you BLANK BLANK the closed captioning issue on our video platform?`
+
+## --blanks--
+
+`have`
+
+### --feedback--
+
+This word is part of the `Present Perfect` tense structure.
+
+---
+
+`heard`
+
+### --feedback--
+
+This is the past participle form of `hear`, used in the `Present Perfect` tense.
+
+---
+
+`about`
+
+### --feedback--
+
+This preposition is used to introduce the topic of the question.
+
+# --explanation--
+
+The sentence uses the `Present Perfect` tense, which is formed with `have/has + past participle`. It indicates an action that happened at an unspecified time before now. For example:
+
+`She has finished her report.` - The report is done, but the exact time isn't mentioned.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.0
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 5.0,
+      "dialogue": {
+        "text": "James, have you heard about the closed captioning issue on our video platform?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 5.5
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9c3400ab12526ccc27e4.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9c3400ab12526ccc27e4.md
new file mode 100644
index 00000000000..ecac4498099
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9c3400ab12526ccc27e4.md
@@ -0,0 +1,92 @@
+---
+id: 671b9c3400ab12526ccc27e4
+title: Task 34
+challengeType: 22
+dashedName: task-34
+---
+
+<!-- (Audio) Alice: James, have you heard about the closed captioning issue on our video platform? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`James, have you heard about the BLANK issue on our BLANK?`
+
+## --blanks--
+
+`closed captioning`
+
+### --feedback--
+
+This phrase of two words refers to text displayed on a video screen to provide additional or interpretive information for viewers.
+
+---
+
+`video platform`
+
+### --feedback--
+
+These two words together mean a digital service or website where videos are shared or streamed.
+
+# --explanation--
+
+`Closed captioning` means the text version of spoken words and other sounds in a video, used to aid viewers who are deaf or hard of hearing. For example:
+
+`The closed captioning needs to be accurate for better accessibility.` - This shows how subtitles help viewers understand video content clearly.
+
+`Video platform` refers to an online service or application that hosts videos. For example:
+
+`Our video platform allows users to upload and share their videos easily.` - This describes a service where users can manage and view videos.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.0
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 5.0,
+      "dialogue": {
+        "text": "James, have you heard about the closed captioning issue on our video platform?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 5.5
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9d6f13a6cf541934fb75.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9d6f13a6cf541934fb75.md
new file mode 100644
index 00000000000..84321c0808b
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671b9d6f13a6cf541934fb75.md
@@ -0,0 +1,102 @@
+---
+id: 671b9d6f13a6cf541934fb75
+title: Task 35
+challengeType: 19
+dashedName: task-35
+---
+
+<!-- (Audio) Alice: James, have you heard about the closed captioning issue on our video platform? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Alice want to know from James?
+
+## --answers--
+
+If James knows about the closed captioning issue.
+
+---
+
+If James has fixed the closed captioning issue.
+
+### --feedback--
+
+Alice is asking if James has heard about the issue, not if he has fixed it.
+
+---
+
+If James reported the closed captioning issue.
+
+### --feedback--
+
+Alice is not asking whether James reported the issue, but if he knows about it.
+
+---
+
+If James created the video platform.
+
+### --feedback--
+
+The question is related to the closed captioning issue, not the creation of the platform.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+Alice is asking if James has any knowledge of the `closed captioning issue`. She is not inquiring about actions like fixing or reporting it.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.0
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 5.0,
+      "dialogue": {
+        "text": "James, have you heard about the closed captioning issue on our video platform?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 5.5
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f403c1d4e8a5e046065a0.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f403c1d4e8a5e046065a0.md
new file mode 100644
index 00000000000..33708945748
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f403c1d4e8a5e046065a0.md
@@ -0,0 +1,96 @@
+---
+id: 671f403c1d4e8a5e046065a0
+title: Task 36
+challengeType: 22
+dashedName: task-36
+---
+
+<!-- (Audio) James: Yes. For some reason, It hasn't been displaying correctly for some users.  -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes. For some reason, It BLANK BLANK BLANK correctly for some users.`
+
+## --blanks--
+
+`hasn't`
+
+### --feedback--
+
+This is the contraction for `has not`, indicating a negative form in the `Present Perfect Continuous` tense.
+
+---
+
+`been`
+
+### --feedback--
+
+This word is part of the `Present Perfect Continuous` tense structure, following `hasn't`.
+
+---
+
+`displaying`
+
+### --feedback--
+
+This is the present participle of `display`, used to show an ongoing action that hasn't been happening correctly.
+
+# --explanation--
+
+The sentence is in the negative form of the `Present Perfect Continuous` tense, which is constructed with `hasn't/haven't + been + present participle`. It describes an ongoing action that started in the past but hasn't occurred as expected. For example:
+
+`The app hasn't been working properly lately.` - It means that the app's functionality has been problematic recently.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.34,
+      "finishTimestamp": 8.26
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.92,
+      "dialogue": {
+        "text": "Yes, for some reason it hasn't been displaying correctly for some users.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.42
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f456994635c6085054cbd.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f456994635c6085054cbd.md
new file mode 100644
index 00000000000..cb8b2208db2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f456994635c6085054cbd.md
@@ -0,0 +1,92 @@
+---
+id: 671f456994635c6085054cbd
+title: Task 37
+challengeType: 22
+dashedName: task-37
+---
+
+<!-- (Audio) James: Yes. For some reason, It hasn't been displaying correctly for some users.  -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes. For some reason, It hasn't been displaying BLANK for some BLANK.`
+
+## --blanks--
+
+`correctly`
+
+### --feedback--
+
+This adverb describes the manner in which something should function, meaning `in the right way`.
+
+---
+
+`users`
+
+### --feedback--
+
+This noun in the plural form refers to people who interact with a product or service, like software or a platform.
+
+# --explanation--
+
+`Correctly` refers to doing something in the right or intended way. For example:
+
+`Make sure the software updates correctly to avoid errors.` - It emphasizes that the update should happen without issues or mistakes.
+
+`User` refers to the people interacting with a product, service, or system. For example:
+
+`The app was designed with users in mind.` - It means someone should think about people who use the app, highlighting the focus on their needs and experience.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.34,
+      "finishTimestamp": 8.26
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.92,
+      "dialogue": {
+        "text": "Yes, for some reason it hasn't been displaying correctly for some users.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.42
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f46b8a64a336294268cf6.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f46b8a64a336294268cf6.md
new file mode 100644
index 00000000000..e3a7496386c
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f46b8a64a336294268cf6.md
@@ -0,0 +1,52 @@
+---
+id: 671f46b8a64a336294268cf6
+title: Task 38
+challengeType: 19
+dashedName: task-38
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which option correctly uses the negative form of the `Present Perfect Continuous` tense?
+
+## --answers--
+
+`The app hasn't been functioning well lately.`
+
+---
+
+`The app is not functioning well lately.`
+
+### --feedback--
+
+This sentence is using the `Present Continuous` tense, not the `Present Perfect continuous` tense.
+
+---
+
+`The app didn't function well lately.`
+
+### --feedback--
+
+This sentence uses the `Simple Past` tense, not the `Present Perfect Continuous` tense.
+
+---
+
+`The app doesn't function well lately.`
+
+### --feedback--
+
+This sentence is in the `Present Simple` tense, not the `Present Perfect continuous` tense.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The negative form of the `Present Perfect continuous` tense tense is created with `hasn't/haven't + been + present participle`. It describes an ongoing action that started in the past and continues or remains relevant but hasn’t occurred as expected. 
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4766b90543639b60a79d.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4766b90543639b60a79d.md
new file mode 100644
index 00000000000..8f39c8588d4
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4766b90543639b60a79d.md
@@ -0,0 +1,58 @@
+---
+id: 671f4766b90543639b60a79d
+title: Task 39
+challengeType: 19
+dashedName: task-39
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which option uses the negative form of the `Present Perfect Continuous` tense?
+
+## --answers--
+
+`She hasn't been studying for the exam lately.`
+
+---
+
+`She hasn't studied for the exam yet.`
+
+### --feedback--
+
+This is the negative form of the `Present Perfect` tense, not the `Present Perfect Continuous` tense.
+
+---
+
+`She didn't study for the exam.`
+
+### --feedback--
+
+This is the `Simple Past` tense.
+
+---
+
+`She doesn't study for the exam.`
+
+### --feedback--
+
+This is the `Present Simple` tense.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The `Present Perfect Continuous` tense negative form is formed with `hasn't/haven't + been + present participle`, indicating an ongoing action that hasn’t occurred as expected over time. For example:
+
+`He hasn't been exercising regularly.` - This means his exercise routine has been irregular.
+  
+The `Present Perfect` tense negative form uses `hasn't/haven't + past participle`, describing an action that has not been completed up to the present moment. For example:
+
+`He hasn't exercised this week.` - This indicates no exercise occurred this week.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f47b9343cd364309aa802.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f47b9343cd364309aa802.md
new file mode 100644
index 00000000000..26ecc04b172
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f47b9343cd364309aa802.md
@@ -0,0 +1,56 @@
+---
+id: 671f47b9343cd364309aa802
+title: Task 40
+challengeType: 19
+dashedName: task-40
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which sentence shows that the action has been ongoing but hasn't happened as expected?
+
+## --answers--
+
+`She hasn't been attending meetings regularly.`
+
+---
+
+`She hasn't attended any meetings this month.`
+
+### --feedback--
+
+This is in the `Present Perfect` tense negative form, showing a completed action that hasn't happened.
+
+---
+
+`She wasn't attending the meeting.`
+
+### --feedback--
+
+This is in the `Past Continuous` tense, not the `Present Perfect Continuous` tense.
+
+---
+
+`She doesn't attend meetings.`
+
+### --feedback--
+
+This is in the `Present Simple` tense, not related to ongoing or completed actions.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+`Present Perfect Continuous` tense negative form emphasizes an ongoing action that has lacked consistency over time, while the `Present Perfect` tense negative form indicates that an action hasn’t occurred at all up to now.
+
+`Past Continuous` tense negative form deals with an action that was not happening at a specific past moment, focusing solely on the past.
+
+`Present Simple` tense negative form shows a lack of regularity or habitual behavior, describing an action that generally does not happen.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4c29b6c10a677571c3e9.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4c29b6c10a677571c3e9.md
new file mode 100644
index 00000000000..97a34ff95ef
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f4c29b6c10a677571c3e9.md
@@ -0,0 +1,104 @@
+---
+id: 671f4c29b6c10a677571c3e9
+title: Task 41
+challengeType: 22
+dashedName: task-41
+---
+
+<!-- (Audio) James: The captions are misaligned and out of sync, which isn't good for accessibility. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`The captions are BLANK and BLANK, which isn't good for BLANK.`
+
+## --blanks--
+
+`misaligned`
+
+### --feedback--
+
+This word describes elements that are not in the correct position or alignment.
+
+---
+
+`out of sync`
+
+### --feedback--
+
+This phrase combining three words refers to two or more elements that are not synchronized or timed correctly.
+
+---
+
+`accessibility`
+
+### --feedback--
+
+This word refers to the ease of use for all users, including those with disabilities.
+
+# --explanation--
+
+`Misaligned` means not lined up or positioned correctly. For example:
+
+`The images were misaligned in the presentation, making it look messy.` - This indicates that the images were not positioned properly, affecting the presentation’s clarity.
+
+`Out of sync` describes when two or more elements are not coordinated in time or movement. For example:
+
+`The video and audio were out of sync during the meeting.` - This means that the audio didn't match the video, causing confusion.
+
+`Accessibility` refers to making products usable for people with diverse needs, including those with disabilities. For example:
+ 
+`Improving accessibility is crucial for all website users.` - This emphasizes the importance of making the website usable for everyone, regardless of their abilities.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 8.32,
+      "finishTimestamp": 12.34
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 5.02,
+      "dialogue": {
+        "text": "The captions are misaligned and out of sync, which isn't good for accessibility.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.52
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f897fb187b46d1457b4eb.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f897fb187b46d1457b4eb.md
new file mode 100644
index 00000000000..cb0c1e30d18
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f897fb187b46d1457b4eb.md
@@ -0,0 +1,102 @@
+---
+id: 671f897fb187b46d1457b4eb
+title: Task 42
+challengeType: 19
+dashedName: task-42
+---
+
+<!-- (Audio) James: The captions are misaligned and out of sync, which isn't good for accessibility. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does James mean when he says the captions are `misaligned and out of sync`?
+
+## --answers--
+
+The captions are clear and easy to read.
+
+### --feedback--
+
+James is describing a problem with how the captions appear.
+
+---
+
+The captions have new fonts and styles.
+
+### --feedback--
+
+James is not talking about the appearance or design of the captions, but about their timing and position.
+
+---
+
+The captions are not properly aligned or synchronized with the video.
+
+---
+
+The captions are available in multiple languages.
+
+### --feedback--
+
+James is not discussing the language options but the positioning and timing of the captions.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+James is explaining that the captions are both `misaligned` (not positioned correctly) and `out of sync` (not timed correctly) with the video, making it difficult for users to follow the content smoothly.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 8.32,
+      "finishTimestamp": 12.34
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 5.02,
+      "dialogue": {
+        "text": "The captions are misaligned and out of sync, which isn't good for accessibility.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.52
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8ab3f5add66eb16be177.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8ab3f5add66eb16be177.md
new file mode 100644
index 00000000000..7f3b30304c2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8ab3f5add66eb16be177.md
@@ -0,0 +1,92 @@
+---
+id: 671f8ab3f5add66eb16be177
+title: Task 43
+challengeType: 22
+dashedName: task-43
+---
+
+<!-- (Audio) Alice: Exactly. Do you know if it’s been affecting all the videos or just a few? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`BLANK. Do you know if it’s been BLANK all the videos or just a few?`
+
+## --blanks--
+
+`Exactly`
+
+### --feedback--
+
+This word is used to express strong agreement or confirmation. The first letter is capitalized.
+
+---
+
+`affecting`
+
+### --feedback--
+
+This verb describes having an impact or influence on something. It's in `-ing` form.
+
+# --explanation--
+
+`Exactly` is used to confirm or agree with a statement completely. For example:
+
+`That's exactly what I was thinking.` - It emphasizes full agreement with someone else's idea.
+
+`Affecting` means having an impact or influence on something. For example:
+
+`The new policy is affecting employee productivity.` - It shows that the policy is influencing how productive employees are.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 12.64,
+      "finishTimestamp": 16.26
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 4.52,
+      "dialogue": {
+        "text": "Exactly. Do you know if it's been affecting all the videos or just a few?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 5.02
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8cdb0d31cb710d7ad031.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8cdb0d31cb710d7ad031.md
new file mode 100644
index 00000000000..da052b1c232
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8cdb0d31cb710d7ad031.md
@@ -0,0 +1,88 @@
+---
+id: 671f8cdb0d31cb710d7ad031
+title: Task 44
+challengeType: 19
+dashedName: task-44
+---
+
+<!-- (Audio) Alice: Exactly. Do you know if it’s been affecting all the videos or just a few? -->
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What might be the answer to Alice's question using the `Present Perfect Continuous` tense in negative form?
+
+## --answers--
+
+`It hasn't been affecting all the videos, just a few.`
+
+---
+
+`It hasn't affected the videos recently.`
+
+### --feedback--
+
+This is in the `Present Perfect` tense, not the `Present Perfect Continuous` tense.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The `Present Perfect Continuous` tense negative form (`hasn't/haven't + been + present participle`) is used to describe an ongoing action that hasn't been happening as expected over time. In this context, it indicates that the issue has been affecting only a few videos, not all of them.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 12.64,
+      "finishTimestamp": 16.26
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 4.52,
+      "dialogue": {
+        "text": "Exactly. Do you know if it's been affecting all the videos or just a few?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 5.02
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8e2ca90546729b1911fa.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8e2ca90546729b1911fa.md
new file mode 100644
index 00000000000..0f0f0b39f0e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f8e2ca90546729b1911fa.md
@@ -0,0 +1,122 @@
+---
+id: 671f8e2ca90546729b1911fa
+title: Task 45
+challengeType: 22
+dashedName: task-45
+---
+
+<!-- (Audio) James: It seems to be affecting several videos. Our quality assurance team has been testing the platform, and noticed that the captions aren’t syncing properly. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`It seems to be affecting several videos. Our BLANK team has been BLANK the platform, and noticed that the captions aren’t BLANK properly.`
+
+## --blanks--
+
+`quality assurance`
+
+### --feedback--
+
+These two words refers to a team or process focused on ensuring that products or services meet certain standards of quality.
+
+---
+
+`testing`
+
+### --feedback--
+
+This verb in `-ing` form describes the action of checking or evaluating the performance of a product, like software.
+
+---
+
+`syncing`
+
+### --feedback--
+
+This word in `-ing` form refers to the process of making things happen at the same time or match up correctly, like aligning audio with video.
+
+# --explanation--
+
+`Quality assurance` is the process of ensuring that a product meets set quality standards. For example:
+
+`The quality assurance team checks the software for bugs before release.` - Here, `quality assurance` emphasizes the team’s role in maintaining the product's standard.
+
+`Testing` means evaluating or examining a product to verify its performance. For example:
+
+`Developers are testing the new features for potential issues.` - This shows that the features are being actively checked for functionality.
+
+`Sync` refers to aligning or matching two elements so they happen simultaneously or correctly. For example:
+
+`Make sure the subtitles are syncing with the video.` - This means the subtitles should match the timing of the spoken words in the video.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 16.6,
+      "finishTimestamp": 24.02
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 2.84,
+      "dialogue": {
+        "text": "It seems to be affecting several videos.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 3.18,
+      "finishTime": 5.66,
+      "dialogue": {
+        "text": "Our quality assurance team has been testing the platform,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 5.66,
+      "finishTime": 8.42,
+      "dialogue": {
+        "text": "and noticed that the captions aren't syncing properly.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 8.92
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f92684454b37660c3f82a.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f92684454b37660c3f82a.md
new file mode 100644
index 00000000000..40a6056e187
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f92684454b37660c3f82a.md
@@ -0,0 +1,120 @@
+---
+id: 671f92684454b37660c3f82a
+title: Task 46
+challengeType: 19
+dashedName: task-46
+---
+
+<!-- (Audio) James: It seems to be affecting several videos. Our quality assurance team has been testing the platform, and noticed that the captions aren’t syncing properly. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+Why is it a problem that `the captions aren’t syncing properly`?
+
+## --answers--
+
+It makes the captions appear in a different language.
+
+### --feedback--
+
+The issue James is describing is about timing, not the language of the captions.
+
+---
+
+It affects the font style of the captions on the screen.
+
+### --feedback--
+
+James is concerned about the timing of the captions, not their appearance.
+
+---
+
+It makes it harder for viewers to follow the video content accurately.
+
+---
+
+It reduces the number of captions displayed in the video.
+
+### --feedback--
+
+The issue is about synchronization, not the number of captions shown.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+When captions aren't syncing properly, viewers can struggle to understand the video content because the text and spoken words don't match up, reducing accessibility and user experience.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 16.6,
+      "finishTimestamp": 24.02
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 2.84,
+      "dialogue": {
+        "text": "It seems to be affecting several videos.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 3.18,
+      "finishTime": 5.66,
+      "dialogue": {
+        "text": "Our quality assurance team has been testing the platform,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 5.66,
+      "finishTime": 8.42,
+      "dialogue": {
+        "text": "and noticed that the captions aren't syncing properly.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 8.92
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f93c4885c6a77aabac13b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f93c4885c6a77aabac13b.md
new file mode 100644
index 00000000000..bf3a199bf54
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f93c4885c6a77aabac13b.md
@@ -0,0 +1,92 @@
+---
+id: 671f93c4885c6a77aabac13b
+title: Task 47
+challengeType: 22
+dashedName: task-47
+---
+
+<!-- (Audio) Alice: That's concerning. Have they found out why it's happening? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`That's BLANK. Have they BLANK why it's happening?`
+
+## --blanks--
+
+`concerning`
+
+### --feedback--
+
+This word expresses worry or anxiety about a situation.
+
+---
+
+`found out`
+
+### --feedback--
+
+These two words together means to discover or learn new information. It's `Past Simple` tense.
+
+# --explanation--
+
+`Concerning` is used to describe something that causes worry or anxiety. For example:
+
+`The drop in performance is quite concerning.` - It means that the drop in performance is a reason for worry.
+
+`Found out` is past tense of `find out`. It means to discover or learn something that was not previously known. For example,
+
+`She found out the reason for the delay.` - It refers to learning new information about the cause of the delay.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.12,
+      "finishTimestamp": 26.42
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 3.3,
+      "dialogue": {
+        "text": "That's concerning. Have they found out why it's happening?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 3.8
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9590517a747a18b10cad.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9590517a747a18b10cad.md
new file mode 100644
index 00000000000..ac72d472729
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9590517a747a18b10cad.md
@@ -0,0 +1,101 @@
+---
+id: 671f9590517a747a18b10cad
+title: Task 48
+challengeType: 22
+dashedName: task-48
+---
+
+<!-- (Audio) James: Not yet. The synchronization code hasn't been updated in a while, which might be part of the problem.  -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Not yet. The BLANK code hasn't been BLANK in a while, which might be part of the problem.`
+
+## --blanks--
+
+`synchronization`
+
+### --feedback--
+
+This word refers to the process of aligning or matching the timing of different elements.
+
+---
+
+`updated`
+
+### --feedback--
+
+This word is past participle of a verb, meaning to bring something to the latest version or to make it more current.
+
+# --explanation--
+
+`Synchronization` refers to aligning elements so that they work together at the same time. For example:
+
+`The synchronization of audio and video is crucial for a good viewing experience.` - It emphasizes the importance of aligning audio and video to make the content clear and enjoyable.
+
+`Updated` is past participle of `update`. It means making something current or bringing it to the latest version. For example:
+
+`The software was updated to fix the bugs.` - It indicates that the software was improved to address problems and ensure better performance.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 26.32,
+      "finishTimestamp": 31.64
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.8,
+      "dialogue": {
+        "text": "Not yet. The synchronization code hasn't been updated in a while,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 5.02,
+      "finishTime": 6.32,
+      "dialogue": {
+        "text": "which might be part of the problem.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 6.82
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f96ce37827d7bc7b64e23.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f96ce37827d7bc7b64e23.md
new file mode 100644
index 00000000000..c30296067bf
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f96ce37827d7bc7b64e23.md
@@ -0,0 +1,104 @@
+---
+id: 671f96ce37827d7bc7b64e23
+title: Task 49
+challengeType: 22
+dashedName: task-49
+---
+
+<!-- (Audio) James: Also, the captions haven't been rendering consistently across different devices. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Also, the captions haven't been BLANK BLANK across different BLANK.`
+
+## --blanks--
+
+`rendering`
+
+### --feedback--
+
+This word in `-ing` form means displaying or presenting something on a screen.
+
+---
+
+`consistently`
+
+### --feedback--
+
+This word describes actions or results that are steady, regular, and without variation.
+
+---
+
+`devices`
+
+### --feedback--
+
+This word refers to electronic equipment like phones, tablets, or computers. It's in plural form.
+
+# --explanation--
+
+`Render` means the process of displaying or generating a visual output on a screen. For example:
+
+`The webpage is not rendering properly in older browsers.` - It emphasizes how the webpage appears or loads on the screen.
+
+`Consistently` refers to doing something in a regular, steady manner without interruptions. For example:
+
+`He performs consistently well in every project.` - It shows that his performance is reliably good over time.
+
+`Devices` are electronic tools like smartphones, laptops, or tablets. For example:
+
+`The app is compatible with most devices.` - This means that the app works well on various types of electronic equipment.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.92,
+      "finishTimestamp": 36.04
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 5.12,
+      "dialogue": {
+        "text": "Also, the captions haven't been rendering consistently across different devices.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.62
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9804d863147de378c679.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9804d863147de378c679.md
new file mode 100644
index 00000000000..d8b55df40d5
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9804d863147de378c679.md
@@ -0,0 +1,120 @@
+---
+id: 671f9804d863147de378c679
+title: Task 50
+challengeType: 19
+dashedName: task-50
+---
+
+<!-- (Audio) James: Not yet. The synchronization code hasn't been updated in a while, which might be part of the problem. Also, the captions haven't been rendering consistently across different devices. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How does James analyze the cause of the problem?
+
+## --answers--
+
+He thinks the outdated synchronization code and inconsistent rendering across devices might be causing the issue.
+
+---
+
+He believes the problem is only with the video content.
+
+### --feedback--
+
+James specifically mentions the synchronization code and rendering issues, not the video content itself.
+
+---
+
+He blames the issue on a recent software update.
+
+### --feedback--
+
+James says the code hasn't been updated in a while, not that a recent update caused the problem.
+
+---
+
+He assumes the problem is fixed because the code is updated frequently.
+
+### --feedback--
+
+James suggests that the code hasn't been updated, which could be contributing to the problem.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+James identifies two potential causes: the `outdated synchronization code` and the `inconsistent rendering of captions across devices`. He links these factors to the issues users are facing, showing a careful analysis of the situation.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 26.32,
+      "finishTimestamp": 36.14
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.8,
+      "dialogue": {
+        "text": "Not yet. The synchronization code hasn't been updated in a while,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 5.02,
+      "finishTime": 6.22,
+      "dialogue": {
+        "text": "which might be part of the problem.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 6.8,
+      "finishTime": 10.82,
+      "dialogue": {
+        "text": "Also, the captions haven't been rendering consistently across different devices.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 11.32
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9aa56463ab7f6d98325f.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9aa56463ab7f6d98325f.md
new file mode 100644
index 00000000000..aa1e10ab0f6
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9aa56463ab7f6d98325f.md
@@ -0,0 +1,106 @@
+---
+id: 671f9aa56463ab7f6d98325f
+title: Task 51
+challengeType: 19
+dashedName: task-51
+---
+
+<!-- (Audio) James: Not yet. The synchronization code hasn't been updated in a while, which might be part of the problem. Also, the captions haven't been rendering consistently across different devices. -->
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What could be a possible solution to the problems James described?
+
+## --answers--
+
+`Ignore the rendering issues and focus on other tasks.`
+
+### --feedback--
+
+This approach wouldn't address the issues with synchronization and rendering that James highlighted.
+
+---
+
+`Update the synchronization code and test the rendering on different devices.`
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Updating the synchronization code and testing the caption rendering across devices could help resolve the issues James identified, ensuring that captions display correctly for all users.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 26.32,
+      "finishTimestamp": 36.14
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.8,
+      "dialogue": {
+        "text": "Not yet. The synchronization code hasn't been updated in a while,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 5.02,
+      "finishTime": 6.22,
+      "dialogue": {
+        "text": "which might be part of the problem.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 6.8,
+      "finishTime": 10.82,
+      "dialogue": {
+        "text": "Also, the captions haven't been rendering consistently across different devices.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 11.32
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9b8ce830ae8098504f26.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9b8ce830ae8098504f26.md
new file mode 100644
index 00000000000..11031049045
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9b8ce830ae8098504f26.md
@@ -0,0 +1,80 @@
+---
+id: 671f9b8ce830ae8098504f26
+title: Task 52
+challengeType: 22
+dashedName: task-52
+---
+
+<!-- (Audio) Alice: Is there a plan to fix it? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Is there a plan to BLANK it?`
+
+## --blanks--
+
+`fix`
+
+### --feedback--
+
+This word means to repair or resolve a problem.
+
+# --explanation--
+
+`Fix` means to repair or solve an issue. For example:
+
+`We need to fix the login error in the app.` - It means you need to address and resolve a specific issue with the login function.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "Alice",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 36.28,
+      "finishTimestamp": 37.5
+    }
+  },
+  "commands": [
+    {
+      "character": "Alice",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Alice",
+      "startTime": 1,
+      "finishTime": 2.22,
+      "dialogue": {
+        "text": "Is there a plan to fix it?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Alice",
+      "opacity": 0,
+      "startTime": 2.72
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9ca66765d781de7213f3.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9ca66765d781de7213f3.md
new file mode 100644
index 00000000000..8ad927f9306
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9ca66765d781de7213f3.md
@@ -0,0 +1,102 @@
+---
+id: 671f9ca66765d781de7213f3
+title: Task 53
+challengeType: 22
+dashedName: task-53
+---
+
+<!-- (Audio) James: We're working on it. The development team hasn't found a definitive solution yet, but they’re narrowing down the possibilities. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`We're working on it. The BLANK hasn't found a definitive BLANK yet, but they’re BLANK the possibilities.`
+
+## --blanks--
+
+`development team`
+
+### --feedback--
+
+The two words together refer to the group responsible for creating and improving products, like software or applications.
+
+---
+
+`solution`
+
+### --feedback--
+
+This word means the answer or fix to a problem.
+
+---
+
+`narrowing down`
+
+### --feedback--
+
+The two words together describe the process of reducing options or focusing on fewer possibilities. The first word is in `-ing` form.
+
+# --explanation--
+
+`Development team` refers to the group of people working on building or improving a product.
+
+`Solution` means an answer or method that resolves a problem. For example:
+
+`We found a solution to the server issue.` - It indicates that the server problem could be addressed and resolved.
+
+`Narrow down` means to reduce the number of options to focus on the most likely ones. For example:
+
+`We need to narrow down our choices to the top three candidates.` - It means you need to limit the list of candidates to a smaller, more manageable number.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 37.56,
+      "finishTimestamp": 44.06
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 7.5,
+      "dialogue": {
+        "text": "We're working on it. The development team hasn't found a definitive solution yet, but they're narrowing down the possibilities.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 8.0
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9e83b440da8486fdf76e.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9e83b440da8486fdf76e.md
new file mode 100644
index 00000000000..9d1642b436b
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/671f9e83b440da8486fdf76e.md
@@ -0,0 +1,102 @@
+---
+id: 671f9e83b440da8486fdf76e
+title: Task 54
+challengeType: 19
+dashedName: task-54
+---
+
+<!-- (Audio) James: We're working on it. The development team hasn't found a definitive solution yet, but they’re narrowing down the possibilities. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is the current status of the issue according to James?
+
+## --answers--
+
+The development team is still working on it and narrowing down the possible solutions.
+
+### --feedback--
+
+James states that they haven't found a solution yet, so the issue remains unresolved.
+
+---
+
+The development team has already found a definitive solution.
+
+### --feedback--
+
+James clearly says that no definitive solution has been found so far.
+
+---
+
+The issue has not been resolved yet, but they are narrowing down the possibilities.
+
+---
+
+The development team stopped working on the issue.
+
+### --feedback--
+
+James indicates that they are actively investigating the problem, so this is incorrect.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+James explains that the issue is still unresolved, but the development team is actively working on it by narrowing down potential causes. This indicates that the problem is not fixed yet, but efforts are ongoing.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room3.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-2.mp3",
+      "startTime": 1,
+      "startTimestamp": 37.56,
+      "finishTimestamp": 44.06
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 7.5,
+      "dialogue": {
+        "text": "We're working on it. The development team hasn't found a definitive solution yet, but they're narrowing down the possibilities.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 8.0
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720cf38beae8c4f1d7af1c0.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720cf38beae8c4f1d7af1c0.md
new file mode 100644
index 00000000000..d152f480379
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720cf38beae8c4f1d7af1c0.md
@@ -0,0 +1,84 @@
+---
+id: 6720cf38beae8c4f1d7af1c0
+title: Task 55
+challengeType: 22
+dashedName: task-55
+---
+
+<!-- REVIEW -->
+
+# --description--
+
+This is a review of the entire dialogue you just studied.
+
+# --instructions--
+
+Place the following phrases in the correct spot: `rendering consistently`, `closed captioning issue`, `displaying correctly`, `definitive solution`, `That's concerning` and `out of sync`.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Alice: James, have you heard about the BLANK on our video platform?`
+
+`James: Yes. For some reason, It hasn't been BLANK for some users. The captions are misaligned and BLANK, which isn't good for accessibility.`
+
+`Alice: Exactly. Do you know if it’s been affecting all the videos or just a few?`
+
+`James: It seems to be affecting several videos. Our quality assurance team has been testing the platform, and noticed that the captions aren’t syncing properly.`
+
+`Alice: BLANK. Have they found out why it's happening?`
+
+`James: Not yet. The synchronization code hasn't been updated in a while, which might be part of the problem. Also, the captions haven't been BLANK across different devices.`
+
+`Alice: Is there a plan to fix it?`
+
+`James: We're working on it. The development team hasn't found a BLANK yet, but they’re narrowing down the possibilities.`
+
+## --blanks--
+
+`closed captioning issue`
+
+### --feedback--
+
+This phrase refers to the problem with the subtitles on the video platform.
+
+---
+
+`displaying correctly`
+
+### --feedback--
+
+This phrase means that the captions have not been showing up properly on the screen.
+
+---
+
+`out of sync`
+
+### --feedback--
+
+This phrase indicates that the captions don't match the timing of the audio.
+
+---
+
+`That's concerning`
+
+### --feedback--
+
+This phrase expresses worry about the situation. The first letter is capitalized.
+
+---
+
+`rendering consistently`
+
+### --feedback--
+
+This phrase means that the captions are displaying the same way on all devices.
+
+---
+
+`definitive solution`
+
+### --feedback--
+
+This phrase indicates a final fix for the problem.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720e69c2152da7b9dad577e.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720e69c2152da7b9dad577e.md
new file mode 100644
index 00000000000..c5fc0f7f27e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720e69c2152da7b9dad577e.md
@@ -0,0 +1,74 @@
+---
+id: 6720e69c2152da7b9dad577e
+title: Task 56
+challengeType: 19
+dashedName: task-56
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+After their conversation, James wrote an email to Alice to update her about what the development team is doing to fix the issues.
+
+`Hi Alice,`
+
+`I wanted to give you an update about our work on the closed captioning problem we talked about.`
+
+`The development team has been working hard to find the cause of the issues. We think some of the problems, like captions being misaligned or out of sync, are because the synchronization code is old. We are now updating the code and testing it on different devices to make sure the captions work better everywhere.`
+
+`We haven’t found a final solution yet, but we are seeing some improvements. The captions are showing up better on most devices, but we still need to do more testing to make sure it works well on all of them. We also plan to add a system that will catch any new errors quickly.`
+
+`I’ll keep you updated as we make more progress. If you have any questions or ideas, please let me know.`
+
+`Best,`
+
+`James`
+
+What is the main reason for the closed captioning issues, according to the email?
+
+## --answers--
+
+The captions are in different languages.
+
+### --feedback--
+
+The email does not mention language differences as a cause of the problem.
+
+---
+
+The synchronization code is old.
+
+---
+
+The captions were deleted by mistake.
+
+### --feedback--
+
+The email does not mention accidental deletion.
+
+---
+
+The captions are too small to read.
+
+### --feedback--
+
+The email talks about synchronization, not font size.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, focus on where James uses the word `because` to explain the cause of the closed captioning issues.
+
+He says that some problems, like `misaligned` or `out-of-sync captions`, are happening `because the synchronization code is old`.
+
+Look for the option that mentions outdated code, as this is identified as the main reason for the issues.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f18957013d8de8ebbe91.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f18957013d8de8ebbe91.md
new file mode 100644
index 00000000000..36f9432d7cf
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f18957013d8de8ebbe91.md
@@ -0,0 +1,74 @@
+---
+id: 6720f18957013d8de8ebbe91
+title: Task 57
+challengeType: 19
+dashedName: task-57
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+After their conversation, James wrote an email to Alice to update her about what the development team is doing to fix the issues.
+
+`Hi Alice,`
+
+`I wanted to give you an update about our work on the closed captioning problem we talked about.`
+
+`The development team has been working hard to find the cause of the issues. We think some of the problems, like captions being misaligned or out of sync, are because the synchronization code is old. We are now updating the code and testing it on different devices to make sure the captions work better everywhere.`
+
+`We haven’t found a final solution yet, but we are seeing some improvements. The captions are showing up better on most devices, but we still need to do more testing to make sure it works well on all of them. We also plan to add a system that will catch any new errors quickly.`
+
+`I’ll keep you updated as we make more progress. If you have any questions or ideas, please let me know.`
+
+`Best,`
+
+`James`
+
+What is the development team currently doing to solve the problem?
+
+## --answers--
+
+They are creating new videos.
+
+### --feedback--
+
+The email does not mention creating new videos.
+
+---
+
+They are updating the synchronization code and testing it.
+
+---
+
+They are adding subtitles in different languages.
+
+### --feedback--
+
+The email focuses on fixing the synchronization code, not language options.
+
+---
+
+They are translating the captions.
+
+### --feedback--
+
+Translation is not mentioned in the email.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, pay attention to where James describes the actions currently being taken by the development team. 
+
+He specifically mentions that they are `updating the code and testing it on different devices` to improve caption performance.
+
+Look for the option that includes these specific activities, as they are central to the ongoing efforts.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f2d525d22693e3fe2a99.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f2d525d22693e3fe2a99.md
new file mode 100644
index 00000000000..c2b1815f3e3
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f2d525d22693e3fe2a99.md
@@ -0,0 +1,72 @@
+---
+id: 6720f2d525d22693e3fe2a99
+title: Task 58
+challengeType: 19
+dashedName: task-58
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+After their conversation, James wrote an email to Alice to update her about what the development team is doing to fix the issues.
+
+`Hi Alice,`
+
+`I wanted to give you an update about our work on the closed captioning problem we talked about.`
+
+`The development team has been working hard to find the cause of the issues. We think some of the problems, like captions being misaligned or out of sync, are because the synchronization code is old. We are now updating the code and testing it on different devices to make sure the captions work better everywhere.`
+
+`We haven’t found a final solution yet, but we are seeing some improvements. The captions are showing up better on most devices, but we still need to do more testing to make sure it works well on all of them. We also plan to add a system that will catch any new errors quickly.`
+
+`I’ll keep you updated as we make more progress. If you have any questions or ideas, please let me know.`
+
+`Best,`
+ 
+`James`
+
+What does James say about the solution?
+
+## --answers--
+
+The problem is fully solved now.
+
+### --feedback--
+
+James clearly states that they haven’t found a final solution yet, so this is incorrect.
+
+---
+
+The captions are showing better, but more testing is needed.
+
+### --feedback--
+
+While James mentions this, it doesn't fully capture the remaining issues with device compatibility.
+
+---
+
+They haven't found a final solution yet.
+
+---
+
+The solution will be available next week.
+
+### --feedback--
+
+James does not provide a specific timeline for when the solution will be ready.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+To identify the correct answer, focus on where James says `We haven’t found a final solution yet`. This indicates that the issue is still unresolved.
+
+Look for the option that emphasizes this ongoing problem, which matches James's update.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45529e496998cced6b6.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45529e496998cced6b6.md
new file mode 100644
index 00000000000..a3b01718a31
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45529e496998cced6b6.md
@@ -0,0 +1,74 @@
+---
+id: 6720f45529e496998cced6b6
+title: Task 59
+challengeType: 19
+dashedName: task-59
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+After their conversation, James wrote an email to Alice to update her about what the development team is doing to fix the issues.
+
+`Hi Alice,`
+
+`I wanted to give you an update about our work on the closed captioning problem we talked about.`
+
+`The development team has been working hard to find the cause of the issues. We think some of the problems, like captions being misaligned or out of sync, are because the synchronization code is old. We are now updating the code and testing it on different devices to make sure the captions work better everywhere.`
+
+`We haven’t found a final solution yet, but we are seeing some improvements. The captions are showing up better on most devices, but we still need to do more testing to make sure it works well on all of them. We also plan to add a system that will catch any new errors quickly.`
+
+`I’ll keep you updated as we make more progress. If you have any questions or ideas, please let me know.`
+
+`Best,`
+
+`James`
+
+What will the new system do?
+
+## --answers--
+
+It will translate captions.
+
+### --feedback--
+
+The system is meant to catch errors, not translate captions.
+
+---
+
+It will create new videos.
+
+### --feedback--
+
+Creating videos is not mentioned in the email.
+
+---
+
+It will improve the video quality.
+
+### --feedback--
+
+The system is focused on catching caption errors.
+
+---
+
+It will catch new errors quickly.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+To determine the correct answer, focus on where James explains what the new system will do.
+
+He mentions that its purpose is to `catch any new errors quickly`.
+
+Look for the option that emphasizes error detection, as this is the main function James describes for the system.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45ff33dd69a10d14e9d.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45ff33dd69a10d14e9d.md
new file mode 100644
index 00000000000..087f369951d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6720f45ff33dd69a10d14e9d.md
@@ -0,0 +1,78 @@
+---
+id: 6720f45ff33dd69a10d14e9d
+title: Task 60
+challengeType: 19
+dashedName: task-60
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+After their conversation, James wrote an email to Alice to update her about what the development team is doing to fix the issues.
+
+`Hi Alice,`
+
+`I wanted to give you an update about our work on the closed captioning problem we talked about.`
+
+`The development team has been working hard to find the cause of the issues. We think some of the problems, like captions being misaligned or out of sync, are because the synchronization code is old. We are now updating the code and testing it on different devices to make sure the captions work better everywhere.`
+
+`We haven’t found a final solution yet, but we are seeing some improvements. The captions are showing up better on most devices, but we still need to do more testing to make sure it works well on all of them. We also plan to add a system that will catch any new errors quickly.`
+
+`I’ll keep you updated as we make more progress. If you have any questions or ideas, please let me know.`
+
+`Best,`
+
+`James`
+
+How does James describe the progress so far?
+
+## --answers--
+
+They have stopped working on the problem.
+
+### --feedback--
+
+James says they are actively working on it.
+
+---
+
+There have been no improvements at all.
+
+### --feedback--
+
+James mentions that there have been some improvements.
+
+---
+
+The problem has been fixed on all devices.
+
+### --feedback--
+
+James says that testing is still needed on different devices.
+
+---
+
+The captions are showing better on most devices.
+
+### --feedback--
+
+This answer is correct.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+To choose the correct answer, focus on how James describes the overall progress so far.
+
+He notes that the captions are `showing better on most devices`, indicating improvement.
+
+Look for the option that reflects this positive change, as James highlights this as a sign of progress.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6727896e74a7ba08f6db7c68.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6727896e74a7ba08f6db7c68.md
new file mode 100644
index 00000000000..89e7726fc24
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6727896e74a7ba08f6db7c68.md
@@ -0,0 +1,178 @@
+---
+id: 6727896e74a7ba08f6db7c68
+title: "Dialogue 3: Voice Command Features"
+challengeType: 21
+dashedName: dialogue-3-voice-command-features
+---
+
+# --description--
+
+Watch the video below to understand the context of the upcoming lessons.
+
+# --assignment--
+
+Watch the video.
+
+# --scene--
+
+```json
+{
+ "setup": {
+   "background": "company2-boardroom.png",
+   "characters": [
+     {
+       "character": "Bob",
+       "position": { "x": -25, "y": 0, "z": 1 }
+     },
+     {
+       "character": "Linda",
+       "position": { "x": 125, "y": 0, "z": 1 }
+     }
+   ],
+   "audio": {
+     "filename": "B1_4-3.mp3",
+     "startTime": 1
+   },
+   "alwaysShowDialogue": true
+ },
+ "commands": [
+   {
+     "character": "Bob",
+     "position": { "x": 25, "y": 0, "z": 1 },
+     "startTime": 0
+   },
+   {
+     "character": "Linda",
+     "position": { "x": 70, "y": 0, "z": 1 },
+     "startTime": 0.5
+   },
+   {
+     "character": "Bob",
+     "startTime": 1,
+     "finishTime": 4.3,
+     "dialogue": {
+       "text": "Hi Linda have you been working on the new voice command features?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 4.8,
+     "finishTime": 7.42,
+     "dialogue": {
+       "text": "Yes, I've been testing them since the latest software update.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 7.42,
+     "finishTime": 10.78,
+     "dialogue": {
+       "text": "We've had some positive feedback, but there are still a few bugs to fix.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Bob",
+     "startTime": 10.78,
+     "finishTime": 13.34,
+     "dialogue": {
+       "text": "How long have you been focusing on this evaluation?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 13.34,
+     "finishTime": 18.92,
+     "dialogue": {
+       "text": "For the past couple weeks. I've been trying to cover all scenarios to ensure that the commands work consistently.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Bob",
+     "startTime": 18.92,
+     "finishTime": 21.38,
+     "dialogue": {
+       "text": "Have you had any problems with voice recognition?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 21.38,
+     "finishTime": 25.02,
+     "dialogue": {
+       "text": "A few. The system hasn't been responding well to certain accents,",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 25.02,
+     "finishTime": 28.36,
+     "dialogue": {
+       "text": "and it struggles with background noise. We need to improve its accuracy.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Bob",
+     "startTime": 28.66,
+     "finishTime": 31.96,
+     "dialogue": {
+       "text": "What about the integration with other systems? Has it been seamless?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 32.5,
+     "finishTime": 36.94,
+     "dialogue": {
+       "text": "Not entirely. It's had issues connecting with our older devices, but we're working on it.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 37,
+     "finishTime": 39.24,
+     "dialogue": {
+       "text": "The development team has been brainstorming solutions",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Bob",
+     "startTime": 39.24,
+     "finishTime": 44.08,
+     "dialogue": {
+       "text": "That's a good start. By the way, have we tested it with real users yet?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "Linda",
+     "startTime": 44.38,
+     "finishTime": 49.56,
+     "dialogue": {
+       "text": "Not yet, but we plan to. I think it would be helpful to get some real-world feedback before we roll it out completely.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Linda",
+     "position": { "x": 125, "y": 0, "z": 1 },
+     "startTime": 50.06
+   },
+   {
+     "character": "Bob",
+     "position": { "x": -25, "y": 0, "z": 1 },
+     "startTime": 50.56
+   }
+ ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278e07d5544c1a93f7f113.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278e07d5544c1a93f7f113.md
new file mode 100644
index 00000000000..d762ad098af
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278e07d5544c1a93f7f113.md
@@ -0,0 +1,104 @@
+---
+id: 67278e07d5544c1a93f7f113
+title: Task 61
+challengeType: 22
+dashedName: task-61
+---
+
+<!-- (audio) Bob: Hi Linda, have you been working on the new voice command features? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Hi Linda, have you been working on the new BLANK BLANK BLANK?`
+
+## --blanks--
+
+`voice`
+
+### --feedback--
+
+This refers to the sound produced when speaking.
+
+---
+
+`command`
+
+### --feedback--
+
+This means an instruction given to a device or a person.
+
+---
+
+`features`
+
+### --feedback--
+
+These are the characteristics or functions of something.
+
+# --explanation--
+
+`Voice` refers to the sound produced when speaking. For example: 
+
+`The assistant recognized his voice immediately.` - It means the unique sound or tone of a person's speech that can be recognized.
+
+`Command` refers to an instruction given to someone or something, often with the expectation that it will be followed. For example: 
+
+`She gave the command to start the engine.` - Here, `command` indicates an authoritative instruction or order.
+
+`Features` are the characteristics or functions of something. For example:
+
+`The new phone has many advanced features, such as face recognition.` - In this sentence, `features` refers to the special functionalities or traits of the phone.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 3.3
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.3,
+      "dialogue": {
+        "text": "Hi Linda have you been working on the new voice command features?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 4.8
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278fa39133d120afee631c.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278fa39133d120afee631c.md
new file mode 100644
index 00000000000..0cee3fb8e2e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67278fa39133d120afee631c.md
@@ -0,0 +1,102 @@
+---
+id: 67278fa39133d120afee631c
+title: Task 62
+challengeType: 19
+dashedName: task-62
+---
+
+<!-- (audio) Bob: Hi Linda, have you been working on the new voice command features? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Bob want to know from Linda?
+
+## --answers--
+
+If Linda has been engaged in developing the new voice command features.
+
+---
+
+If Linda is planning to work on the new features.
+
+### --feedback--
+
+Bob is asking if Linda has already been working, not about future plans.
+
+---
+
+What the new voice command features are.
+
+### --feedback--
+
+Bob is inquiring about Linda's work on them, not their definition.
+
+---
+
+When Linda started working on the new features.
+
+### --feedback--
+
+Bob's question focuses on whether she has been working, not when she started.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The `Present Perfect Continuous` tense (`have been working`) indicates an action that started in the past and is still ongoing or has relevance to the present. Bob's question suggests he is interested in Linda's current progress on the project.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 3.3
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 4.3,
+      "dialogue": {
+        "text": "Hi Linda have you been working on the new voice command features?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 4.8
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672830d9aa2e0c2ff2fad7f8.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672830d9aa2e0c2ff2fad7f8.md
new file mode 100644
index 00000000000..df3ee2d444d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672830d9aa2e0c2ff2fad7f8.md
@@ -0,0 +1,92 @@
+---
+id: 672830d9aa2e0c2ff2fad7f8
+title: Task 63
+challengeType: 22
+dashedName: task-63
+---
+
+<!-- (audio) Linda: Yes, I’ve been testing them since the latest software update. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes, I’ve been testing them BLANK the latest BLANK.`
+
+## --blanks--
+
+`since`
+
+### --feedback--
+
+This word is used to indicate a starting point in time for an action that continues to the present.
+
+---
+
+`software update`
+
+### --feedback--
+
+These two words together refer to a version of software that has been improved or fixed.
+
+## --explanation--
+
+In the `Present Perfect Continuous` tense, `since` is used to indicate when an action began and continues up to the present. For example:
+
+`I’ve been learning JavaScript since 2020.` - It shows that the action of learning JavaScript started in 2020 and is still ongoing.
+
+The term `software update` refers to changes or improvements made to a computer program. For example:
+
+`The software update fixed several bugs and added new features.` - It means the latest version of the program that includes fixes and enhancements. It indicates that the improvements are part of the ongoing development of the software.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 3.8,
+      "finishTimestamp": 6.42
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 3.62,
+      "dialogue": {
+        "text": "Yes, I've been testing them since the latest software update",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 4.12
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672833c79d024f37111a48ce.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672833c79d024f37111a48ce.md
new file mode 100644
index 00000000000..a7b18821650
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672833c79d024f37111a48ce.md
@@ -0,0 +1,52 @@
+---
+id: 672833c79d024f37111a48ce
+title: Task 64
+challengeType: 19
+dashedName: task-64
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which sentence correctly uses `since` in the `Present Perfect Continuous` tense?
+
+## --answers--
+
+`I have worked on the project since last week.`
+
+### --feedback--
+
+This is `Present Perfect Simple` tense. The verb form should be in the `Present Perfect Continuous` tense (`have been working`) to indicate an ongoing action.
+
+---
+
+`I was testing the program since yesterday.`
+
+### --feedback--
+
+This is `Past Simple` tense. The `Present Perfect Continuous` tense should use `have been` instead of `was`.
+
+---
+
+`I have been testing them since the latest software update.`
+
+---
+
+`I will have been working on the project since next month.`
+
+### --feedback--
+
+The `Future Perfect` tense is not appropriate here; `since` is used with the `Present Perfect Continuous` tense.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+`Since` is used in the `Present Perfect Continuous` tense to indicate the starting point of an action that is still ongoing.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672836d6ec0ae23f4724ccb1.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672836d6ec0ae23f4724ccb1.md
new file mode 100644
index 00000000000..5f0d668502d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672836d6ec0ae23f4724ccb1.md
@@ -0,0 +1,102 @@
+---
+id: 672836d6ec0ae23f4724ccb1
+title: Task 65
+challengeType: 19
+dashedName: task-65
+---
+
+<!-- (audio) Linda: Yes, I’ve been testing them since the latest software update. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What can you infer about Linda's work after the latest software update?
+
+## --answers--
+
+She has just started testing the features.
+
+### --feedback--
+
+Linda uses the `Present Perfect Continuous` tense, indicating that she started testing earlier and is still doing it now.
+
+---
+
+She has been testing the features continuously after the latest software update.
+
+---
+
+She completed testing the features before the software update.
+
+### --feedback--
+
+The use of `since` implies that testing began at the time of the update and continues.
+
+---
+
+She is planning to test the features in the future.
+
+### --feedback--
+
+Linda's statement refers to testing that is currently happening, not future plans.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Linda's statement indicates that the action of testing started at the time of the software update and is still ongoing. This shows her current involvement with the features in question.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 3.8,
+      "finishTimestamp": 6.42
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 3.62,
+      "dialogue": {
+        "text": "Yes, I've been testing them since the latest software update",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 4.12
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728378c94eaf541fce8f334.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728378c94eaf541fce8f334.md
new file mode 100644
index 00000000000..a74766adeac
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728378c94eaf541fce8f334.md
@@ -0,0 +1,92 @@
+---
+id: 6728378c94eaf541fce8f334
+title: Task 66
+challengeType: 22
+dashedName: task-66
+---
+
+<!-- (audio) Linda: We’ve had some positive feedback, but there are still a few bugs to fix. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`We’ve had some positive BLANK, but there are still a few BLANK to fix.`
+
+## --blanks--
+
+`feedback`
+
+### --feedback--
+
+This word refers to comments or opinions about a product or service, often used to improve quality.
+
+---
+
+`bugs`
+
+### --feedback--
+
+This term refers to errors in software that need to be resolved. It's plural form.
+
+## --explanation--
+
+`Feedback` refers to responses or evaluations from users regarding a product's performance. For example:
+
+`The feedback from users helped improve the app.` - It means the opinions given by users provide insight into what works well and what needs improvement.
+
+`Bugs` refer to issues or errors in software that cause it to malfunction. For example:
+
+`The team is working hard to fix the bugs before the release.` - It indicates specific problems in the software need to be corrected for it to function properly.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 6.42,
+      "finishTimestamp": 9.78
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.36,
+      "dialogue": {
+        "text": "We've had some positive feedback, but there are still a few bugs to fix",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 4.86
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289c4908f407948ef08a55.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289c4908f407948ef08a55.md
new file mode 100644
index 00000000000..f1596b7905e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289c4908f407948ef08a55.md
@@ -0,0 +1,102 @@
+---
+id: 67289c4908f407948ef08a55
+title: Task 67
+challengeType: 19
+dashedName: task-67
+---
+
+<!-- (audio) Linda: We’ve had some positive feedback, but there are still a few bugs to fix. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Linda mean by saying `there are still a few bugs to fix`?
+
+## --answers--
+
+The project is finished and requires no further changes.
+
+### --feedback--
+
+Linda's statement suggests that there are still issues that need to be addressed.
+
+---
+
+The feedback they received was completely negative.
+
+### --feedback--
+
+Linda mentions positive feedback, which indicates that some aspects were well-received.
+
+---
+
+They have resolved all the issues mentioned in the feedback.
+
+### --feedback--
+
+Linda indicates that there are still bugs to fix, meaning some issues remain unresolved.
+
+---
+
+There are still some errors in the software that need to be addressed.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Linda's statement highlights that although they have received good responses from users (`positive feedback`), there are still some technical issues (`bugs`) that need attention before the project can be considered complete.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 6.42,
+      "finishTimestamp": 9.78
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.36,
+      "dialogue": {
+        "text": "We've had some positive feedback, but there are still a few bugs to fix",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 4.86
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289e1748ed4b9623086332.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289e1748ed4b9623086332.md
new file mode 100644
index 00000000000..f223faf5fe8
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/67289e1748ed4b9623086332.md
@@ -0,0 +1,92 @@
+---
+id: 67289e1748ed4b9623086332
+title: Task 68
+challengeType: 22
+dashedName: task-68
+---
+
+<!-- (audio) Bob: How long have you been focusing on this evaluation? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`How long have you been BLANK this BLANK?`
+
+## --blanks--
+
+`focusing on`
+
+### --feedback--
+
+These two words together mean to concentrate attention or effort on a particular task or subject. The first word is in `-ing` form.
+
+---
+
+`evaluation`
+
+### --feedback--
+
+This noun refers to the process of assessing or judging the quality, value, or performance of something.
+
+## --explanation--
+
+The phrase `focus on` indicates directing attention or effort towards a specific area or task. For example:
+
+`I am focusing on improving my coding skills.` - It means you are concentrating your efforts on enhancing your abilities in coding.
+
+The term `evaluation` refers to a systematic process of assessing something's performance or effectiveness. For example:
+
+`The evaluation of the project's success will take place next month.` - It implies that a careful judgment will be made based on specific criteria, to determine how successful the project was.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 9.78,
+      "finishTimestamp": 12.44
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 3.66,
+      "dialogue": {
+        "text": "How long have you been focusing on this evaluation?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.16
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728a193fccbc59b016a8584.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728a193fccbc59b016a8584.md
new file mode 100644
index 00000000000..73c6d545660
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728a193fccbc59b016a8584.md
@@ -0,0 +1,88 @@
+---
+id: 6728a193fccbc59b016a8584
+title: Task 69
+challengeType: 19
+dashedName: task-69
+---
+
+<!-- (audio) Bob: How long have you been focusing on this evaluation? -->
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How can you respond to Bob's question using the word `since`?
+
+## --answers--
+
+`I have been focusing on this evaluation since last week.`
+
+---
+
+`I will focus on this evaluation since tomorrow.`
+
+### --feedback--
+
+The use of `since` here is not appropriate because it refers to a future action rather than something that has already started.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+In the `Present Perfect Continuous` tense, `since` is used to indicate the starting point of an action that began in the past and continues into the present, making it clear that Bob is still engaged with the evaluation process.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 9.78,
+      "finishTimestamp": 12.44
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 3.66,
+      "dialogue": {
+        "text": "How long have you been focusing on this evaluation?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.16
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728bf5cd59713a140c558be.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728bf5cd59713a140c558be.md
new file mode 100644
index 00000000000..6997788c670
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728bf5cd59713a140c558be.md
@@ -0,0 +1,80 @@
+---
+id: 6728bf5cd59713a140c558be
+title: Task 70
+challengeType: 22
+dashedName: task-70
+---
+
+<!-- (audio) Linda: For the past couple of weeks. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`BLANK the past couple of weeks.`
+
+## --blanks--
+
+`For`
+
+### --feedback--
+
+This preposition indicates the duration of time over which an action has been occurring. The first letter is capitalized.
+
+## --explanation--
+
+In the `Present Perfect Continuous` tense, `for` is used to specify the duration of time that an action has been happening. For example:
+
+- `I have been studying for my exams for three hours.` - In this sentence, `for` indicates the length of time (`three hours`) that the action of studying has been taking place.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 12.34,
+      "finishTimestamp": 13.92
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 2.58,
+      "dialogue": {
+        "text": "for the past couple weeks.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 3.08
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c0ac41d990a2f6de9ea4.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c0ac41d990a2f6de9ea4.md
new file mode 100644
index 00000000000..2932d3eb5ee
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c0ac41d990a2f6de9ea4.md
@@ -0,0 +1,130 @@
+---
+id: 6728c0ac41d990a2f6de9ea4
+title: Task 71
+challengeType: 19
+dashedName: task-71
+---
+
+<!-- (audio) Bob: How long have you been focusing on this evaluation? Linda: For the past couple of weeks. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Linda indicate about her work on the evaluation?
+
+## --answers--
+
+She has just started focusing on the evaluation.
+
+### --feedback--
+
+Linda's response indicates that she has been focusing on it for some time, not that she just started.
+
+---
+
+She has been focusing on the evaluation for a few weeks.
+
+---
+
+She is unsure about how long she has been focusing.
+
+### --feedback--
+
+Linda's response shows that she is certain about the duration of her focus on the evaluation.
+
+---
+
+She will start focusing on the evaluation next week.
+
+### --feedback--
+
+Linda's answer indicates that she has already been focusing on the evaluation, not that she will start in the future.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Linda's response `For the past couple of weeks` clarifies that she has been actively engaged in focusing on the evaluation for that specific duration, showing her commitment to the task over the last few weeks.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      },
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 9.78,
+      "finishTimestamp": 13.92
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 3.56,
+      "dialogue": {
+        "text": "How long have you been focusing on this evaluation?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 3.56
+    },
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 3.56
+    },
+    {
+      "character": "Linda",
+      "startTime": 3.56,
+      "finishTime": 5.14,
+      "dialogue": {
+        "text": "For the past couple weeks.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 5.64
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c22492994ca4deab5f93.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c22492994ca4deab5f93.md
new file mode 100644
index 00000000000..b943e1c93dc
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c22492994ca4deab5f93.md
@@ -0,0 +1,52 @@
+---
+id: 6728c22492994ca4deab5f93
+title: Task 72
+challengeType: 19
+dashedName: task-72
+---
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+Which sentence correctly uses `for` and `since`?
+
+## --answers--
+
+`I have been working here since three years.`
+
+### --feedback--
+
+`Since` should be used with a specific point in time, not a duration like `three years`.
+
+---
+
+`I have been studying for the exam since last week.`
+
+---
+
+`I will focus on this project for tomorrow.`
+
+### --feedback--
+
+`For` should indicate a duration, not a specific future time like `tomorrow`.
+
+---
+
+`She has lived in this city for 2010.`
+
+### --feedback--
+
+`Since` should be used to indicate a specific year (e.g., `since 2010`), while `for` indicates a duration of time.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+`For` is used with periods of time (e.g., days, weeks), while `since` is used with specific dates or points in time.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c369d38d3ea6634c1649.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c369d38d3ea6634c1649.md
new file mode 100644
index 00000000000..2b2a78fb9dd
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c369d38d3ea6634c1649.md
@@ -0,0 +1,92 @@
+---
+id: 6728c369d38d3ea6634c1649
+title: Task 73
+challengeType: 22
+dashedName: task-73
+---
+
+<!-- (audio) Linda: I’ve been trying to cover all scenarios to ensure that the commands work consistently. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`I’ve been trying to cover all BLANK to ensure that the commands work BLANK.`
+
+## --blanks--
+
+`scenarios`
+
+### --feedback--
+
+This word in the plural form refers to different situations or contexts that may arise.
+
+---
+
+`consistently`
+
+### --feedback--
+
+This adverb means in a way that is reliable and uniform over time.
+
+## --explanation--
+
+`Scenarios` refers to different situations or possible events that could occur. For example:
+
+`The team prepared for different scenarios during the testing phase.` - It means the team anticipated different conditions or situations, ensuring that they were ready for any outcome.
+
+`Consistently` indicates an action or performance remains stable and does not vary, ensuring predictable results. For example:
+
+`The application needs to run consistently to maintain user satisfaction.` - It means that the application should perform reliably over time, providing the same level of service to users without fluctuations.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 14.14,
+      "finishTimestamp": 18.02
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.88,
+      "dialogue": {
+        "text": "I've been trying to cover all scenarios to ensure that the commands work consistently.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 5.38
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c6fad8d9caa92837c75f.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c6fad8d9caa92837c75f.md
new file mode 100644
index 00000000000..2569cfd6c42
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/6728c6fad8d9caa92837c75f.md
@@ -0,0 +1,102 @@
+---
+id: 6728c6fad8d9caa92837c75f
+title: Task 74
+challengeType: 19
+dashedName: task-74
+---
+
+<!-- (audio) Linda: For the past couple of weeks. I’ve been trying to cover all scenarios to ensure that the commands work consistently. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What might Linda be doing to achieve her goal?
+
+## --answers--
+
+She is only checking if the commands work.
+
+### --feedback--
+
+Linda's focus on covering all scenarios suggests a more comprehensive approach than just checking functionality.
+
+---
+
+She is writing a report about the commands.
+
+### --feedback--
+
+While she may document her findings, her statement focuses on testing and ensuring consistent performance.
+
+---
+
+She is asking others for their opinions.
+
+### --feedback--
+
+Although she might seek input, her primary task is to cover scenarios and ensure functionality.
+
+---
+
+She is testing different situations to see if the commands work well.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Linda's statement indicates she is focused on testing various scenarios, which implies she is experimenting with different conditions to ensure that the commands perform reliably under all situations.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 12.34,
+      "finishTimestamp": 18.02
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 6.68,
+      "dialogue": {
+        "text": "For the past couple weeks. I've been trying to cover all scenarios to ensure that the commands work consistently.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 7.18
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a192e685fba081cfbeb2d.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a192e685fba081cfbeb2d.md
new file mode 100644
index 00000000000..21103c51b58
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a192e685fba081cfbeb2d.md
@@ -0,0 +1,80 @@
+---
+id: 672a192e685fba081cfbeb2d
+title: Task 75
+challengeType: 22
+dashedName: task-75
+---
+
+<!-- (audio) Bob: Have you had any problems with voice recognition? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Have you had any problems with BLANK?`
+
+## --blanks--
+
+`voice recognition`
+
+### --feedback--
+
+These two words together refer to the technology that allows a computer or device to understand and interpret human speech.
+
+## --explanation--
+
+`Voice recognition` is a technology that enables machines to recognize and respond to human speech. It's commonly used in devices like smartphones, smart speakers, and virtual assistants, allowing users to control these devices through voice commands. For example:
+
+- `Siri uses voice recognition to understand your commands.` - In this example, `voice recognition` allows Siri, the virtual assistant, to interpret what the user is saying in order to perform tasks like sending a message or setting an alarm.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 17.92,
+      "finishTimestamp": 20.48
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 3.56,
+      "dialogue": {
+        "text": "Have you had any problems with voice recognition?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.06
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1c6ca33f8115728e7f79.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1c6ca33f8115728e7f79.md
new file mode 100644
index 00000000000..dffe5ee639f
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1c6ca33f8115728e7f79.md
@@ -0,0 +1,102 @@
+---
+id: 672a1c6ca33f8115728e7f79
+title: Task 76
+challengeType: 19
+dashedName: task-76
+---
+
+<!-- (audio) Bob: Have you had any problems with voice recognition? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is Bob asking about?
+
+## --answers--
+
+If there have been any issues with understanding speech.
+
+---
+
+If there have been problems with other technologies.
+
+### --feedback--
+
+Bob specifically mentions voice recognition, not other technologies.
+
+---
+
+If the device has been working properly.
+
+### --feedback--
+
+Bob is asking about potential issues related to voice recognition, not the device’s general performance.
+
+---
+
+If there is a new update for the voice recognition system.
+
+### --feedback--
+
+Bob’s question is about problems with voice recognition, not about updates.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+Bob is specifically asking if there have been any issues with voice recognition, which is the technology used to understand spoken words.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 17.92,
+      "finishTimestamp": 20.48
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 3.56,
+      "dialogue": {
+        "text": "Have you had any problems with voice recognition?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.06
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1e2fbec6a61bf477ea49.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1e2fbec6a61bf477ea49.md
new file mode 100644
index 00000000000..a818d966911
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a1e2fbec6a61bf477ea49.md
@@ -0,0 +1,113 @@
+---
+id: 672a1e2fbec6a61bf477ea49
+title: Task 77
+challengeType: 22
+dashedName: task-77
+---
+
+<!-- (audio) Linda: A few. The system hasn't been responding well to certain accents, and it struggles with background noise. We need to improve its accuracy. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`A few. The system hasn't been responding well to certain BLANK, and it struggles with BLANK. We need to improve its BLANK.`
+
+## --blanks--
+
+`accents`
+
+### --feedback--
+
+This word in the plural form refers to the way people pronounce words, which can vary depending on their region or language background.
+
+---
+
+`background noise`
+
+### --feedback--
+
+These two words together refer to any unwanted sounds in the environment, such as traffic, music, or conversations.
+
+---
+
+`accuracy`
+
+### --feedback--
+
+It refers to how correct or precise something is. In this case, it means how well the system can understand speech without errors or confusion.
+
+## --explanation--
+
+`Accent` refers to variations in pronunciation based on someone's region or cultural background. For example:
+  
+- `The software struggled to understand the speaker's accent.` - It indicates that the way the speaker pronounces words made it harder for the software to understand.
+
+`Background noise` refers to unwanted sounds that can interfere with hearing something clearly. For example:
+  
+- `The microphone couldn’t pick up my voice because of the background noise.` - In this sentence, `background noise` refers to sounds like music or traffic that made it difficult for the microphone to hear your voice clearly.
+
+`Accuracy` refers to how precise or correct something is. In the case of `voice recognition`, it means how well the system can understand and process speech without errors. For example:
+  
+- `We need to improve the accuracy of the system to better understand diverse voices.` - It emphasizes the need for the system to more reliably recognize different speakers and accents correctly.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 20.38,
+      "finishTimestamp": 27.46
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.64,
+      "dialogue": {
+        "text": "A few. The system hasn't been responding well to certain accents,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 4.64,
+      "finishTime": 8.08,
+      "dialogue": {
+        "text": "and it struggles with background noise. We need to improve its accuracy.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 8.58
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a21a4b40ed3279d513888.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a21a4b40ed3279d513888.md
new file mode 100644
index 00000000000..f11795aa422
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a21a4b40ed3279d513888.md
@@ -0,0 +1,111 @@
+---
+id: 672a21a4b40ed3279d513888
+title: Task 78
+challengeType: 19
+dashedName: task-78
+---
+
+<!-- (audio) Linda: A few. The system hasn't been responding well to certain accents, and it struggles with background noise. We need to improve its accuracy. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What might Linda be suggesting about the system’s current performance?
+
+## --answers--
+
+It’s working perfectly fine with all accents and environments.
+
+### --feedback--
+
+Linda clearly mentions that the system is struggling with accents and background noise, which means it is not working perfectly.
+
+---
+
+It needs improvement due to problems with understanding certain accents and background noise.
+
+---
+
+It has been performing well overall, but it occasionally struggles with specific accents.
+
+### --feedback--
+
+Linda highlights that the system is having consistent problems, not just occasional struggles.
+
+---
+
+The system is showing great progress and only needs minor tweaks.
+
+### --feedback--
+
+Linda mentions the need for improvement, but there is no indication that the system is performing well overall.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Linda mentions that the system is struggling with certain accents and background noise, indicating ongoing and significant challenges. The correct answer highlights the need for improvement due to specific problems she described.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 20.38,
+      "finishTimestamp": 27.46
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.64,
+      "dialogue": {
+        "text": "A few. The system hasn't been responding well to certain accents,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 4.64,
+      "finishTime": 8.08,
+      "dialogue": {
+        "text": "and it struggles with background noise. We need to improve its accuracy.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 8.58
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a2360e608aa2e32a1e08c.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a2360e608aa2e32a1e08c.md
new file mode 100644
index 00000000000..b649f6aaf0b
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a2360e608aa2e32a1e08c.md
@@ -0,0 +1,111 @@
+---
+id: 672a2360e608aa2e32a1e08c
+title: Task 79
+challengeType: 19
+dashedName: task-79
+---
+
+<!-- (audio) Linda: A few. The system hasn't been responding well to certain accents, and it struggles with background noise. We need to improve its accuracy. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does the negative form of the `Present Perfect Continuous` tense (`hasn't been responding`) indicate in Linda's statement?
+
+## --answers--
+
+The system has just started responding well, but it still needs improvement.
+
+### --feedback--
+
+The negative form indicates that the system hasn't been performing well, not that it has just started working.
+
+---
+
+The system has had intermittent issues with responding, but it is working better now.
+
+### --feedback--
+
+The negative form implies that the system has been continuously having issues, not intermittent ones.
+
+---
+
+The system has been continuously struggling and needs improvement.
+
+---
+
+The system has worked well but recently began having problems.
+
+### --feedback--
+
+The negative form in this case describes ongoing struggles, not a recent change in performance.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Linda's statement indicates that the system has consistently struggled with certain accents and background noise, showing a continuous issue. This points to the answer that highlights ongoing struggles and the need for improvement.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 20.38,
+      "finishTimestamp": 27.46
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 4.64,
+      "dialogue": {
+        "text": "A few. The system hasn't been responding well to certain accents,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 4.64,
+      "finishTime": 8.08,
+      "dialogue": {
+        "text": "and it struggles with background noise. We need to improve its accuracy.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 8.58
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a251e826af634c1360078.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a251e826af634c1360078.md
new file mode 100644
index 00000000000..c31b97e0eb4
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a251e826af634c1360078.md
@@ -0,0 +1,92 @@
+---
+id: 672a251e826af634c1360078
+title: Task 80
+challengeType: 22
+dashedName: task-80
+---
+
+<!-- (audio) Bob: What about the integration with other systems? Has it been seamless? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`What about the BLANK with other systems? Has it been BLANK?`
+
+## --blanks--
+
+`integration`
+
+### --feedback--
+
+It refers to the process of combining or connecting different systems or components so that they work together smoothly.
+
+---
+
+`seamless`
+
+### --feedback--
+
+It describes something that happens smoothly, without interruptions or issues.
+
+# --explanation--
+
+`Integration` is the process of linking different systems or components. For example: 
+
+`The integration of our new software with the old system was quick and efficient.` - This means that the two systems were successfully combined to work together.
+
+`Seamless` refers to something being smooth, continuous, and without problems or interruptions. For example: 
+
+`The integration of the new software was seamless, with no disruptions to the workflow.` - This means that the software `integration` happened smoothly, without any problems or delays, making the transition easy and efficient.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 27.66,
+      "finishTimestamp": 31.06
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 4.4,
+      "dialogue": {
+        "text": "What about the integration with other systems? Has it been seamless?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.9
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a27098fa55c3bfa11c5fb.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a27098fa55c3bfa11c5fb.md
new file mode 100644
index 00000000000..fb5881b2f92
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a27098fa55c3bfa11c5fb.md
@@ -0,0 +1,102 @@
+---
+id: 672a27098fa55c3bfa11c5fb
+title: Task 81
+challengeType: 19
+dashedName: task-81
+---
+
+<!-- (audio) Bob: What about the integration with other systems? Has it been seamless? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is Bob asking about the integration with other systems?
+
+## --answers--
+
+If the integration has caused problems with other systems.
+
+### --feedback--
+
+Bob is asking if the integration has been smooth, not if it caused problems.
+
+---
+
+If the integration has been tested with other systems.
+
+### --feedback--
+
+Bob is asking whether the integration has been `seamless`, not whether it has been tested.
+
+---
+
+If the integration process has been completed successfully.
+
+### --feedback--
+
+Bob is asking about the smoothness of the integration, not if it is finished.
+
+---
+
+If the integration with other systems has been smooth and without issues.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Bob uses the word `seamless` to ask about the integration process. When something is `seamless`, it means it was done smoothly and without interruptions or problems. In this case, Bob wants to know if the integration with other systems has been successful and smooth, without any complications.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 27.66,
+      "finishTimestamp": 31.06
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 4.4,
+      "dialogue": {
+        "text": "What about the integration with other systems? Has it been seamless?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 4.9
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a296a309d9c46658c071a.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a296a309d9c46658c071a.md
new file mode 100644
index 00000000000..185680dce45
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672a296a309d9c46658c071a.md
@@ -0,0 +1,120 @@
+---
+id: 672a296a309d9c46658c071a
+title: Task 85
+challengeType: 19
+dashedName: task-85
+---
+
+<!-- (audio) Linda: Not entirely. It’s had issues connecting with our older devices, but we’re working on it. The development team has been brainstorming solutions. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is the cause of the issues Linda mentions in the audio?
+
+## --answers--
+
+The connection problems are due to new devices being incompatible.
+
+### --feedback--
+
+Linda mentions that the issue is with older devices, not new ones.
+
+---
+
+The issues are caused by the development team working on the wrong solutions.
+
+### --feedback--
+
+Linda mentions the team has been brainstorming solutions, but the issue is related to older devices.
+
+---
+
+The problems are due to a lack of effort from the development team.
+
+### --feedback--
+
+Linda says the development team is actively working on solutions.
+
+---
+
+The problems are caused by the devices being too old.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+In the audio, Linda is talking about connection problems with `older devices`. This indicates that the issues arise because the `older devices` are not working well with the current technology, possibly due to differences in compatibility.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.5,
+      "finishTimestamp": 38.24
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 1.82,
+      "dialogue": {
+        "text": "Not entirely.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 1.82,
+      "finishTime": 5.44,
+      "dialogue": {
+        "text": "It's had issues connecting with our older devices, but we're working on it.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 5.5,
+      "finishTime": 7.74,
+      "dialogue": {
+        "text": "The development team has been brainstorming solutions.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 8.24
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afc3d3758e25087697611.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afc3d3758e25087697611.md
new file mode 100644
index 00000000000..255d30d72b9
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afc3d3758e25087697611.md
@@ -0,0 +1,120 @@
+---
+id: 672afc3d3758e25087697611
+title: Task 86
+challengeType: 19
+dashedName: task-86
+---
+
+<!-- (audio) Linda: Not entirely. It’s had issues connecting with our older devices, but we’re working on it. The development team has been brainstorming solutions. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is the current status of the issue Linda is describing?
+
+## --answers--
+
+The development team has already fixed the problem.
+
+### --feedback--
+
+Linda says they are still working on the problem, not that it has been solved yet.
+
+---
+
+The issue has been resolved, but the devices are still incompatible.
+
+### --feedback--
+
+Linda mentions that the development team is still working on the problem, which means it has not been fully resolved.
+
+---
+
+The team is working on fixing the issue, but it is not yet completely solved.
+
+---
+
+The system is no longer having issues with the devices.
+
+### --feedback--
+
+Linda indicates that the issue is still present and that the team is working on finding a solution.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Linda talks about the issue not being resolved entirely yet. The development team is still `working on it`, meaning they are in the process of trying to fix the connection problems with the older devices. She also mentions that the team `has been brainstorming solutions`, indicating they are actively looking for ways to improve the situation, but the issue has not been fully solved yet. 
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.5,
+      "finishTimestamp": 38.24
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 1.82,
+      "dialogue": {
+        "text": "Not entirely.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 1.82,
+      "finishTime": 5.44,
+      "dialogue": {
+        "text": "It's had issues connecting with our older devices, but we're working on it.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 5.5,
+      "finishTime": 7.74,
+      "dialogue": {
+        "text": "The development team has been brainstorming solutions.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 8.24
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afe3809d2a55224868ea5.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afe3809d2a55224868ea5.md
new file mode 100644
index 00000000000..1aa169cd614
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672afe3809d2a55224868ea5.md
@@ -0,0 +1,102 @@
+---
+id: 672afe3809d2a55224868ea5
+title: Task 87
+challengeType: 19
+dashedName: task-87
+---
+
+<!-- (audio) Bob: That's a good start. By the way, have we tested it with real users yet? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How does Bob feel about the current status of the project?
+
+## --answers--
+
+He is disappointed with the progress made so far.
+
+### --feedback--
+
+Bob says `That's a good start`, indicating that he is not disappointed but rather sees it as positive progress.
+
+---
+
+He thinks the project is fully complete and ready for launch.
+
+### --feedback--
+
+Bob’s question about testing with real users suggests he sees the project as ongoing, not fully complete.
+
+---
+
+He believes the team needs to stop working and start a new project.
+
+### --feedback--
+
+Bob’s comment suggests he thinks the project is progressing well, not that it should be stopped.
+
+---
+
+He thinks the project has made good initial progress but needs further testing.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Bob’s comment `That's a good start` shows that he is pleased with the progress so far. However, his follow-up question about testing with real users suggests he thinks more steps are needed before the project is complete. This indicates that he feels positive about the current status but sees the need for further validation and testing.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Bob",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 38.24,
+      "finishTimestamp": 43.08
+    }
+  },
+  "commands": [
+    {
+      "character": "Bob",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Bob",
+      "startTime": 1,
+      "finishTime": 5.84,
+      "dialogue": {
+        "text": "That's a good start. By the way, have we tested it with real users yet?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Bob",
+      "opacity": 0,
+      "startTime": 6.34
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b202ba00fc253ab8275f2.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b202ba00fc253ab8275f2.md
new file mode 100644
index 00000000000..7950642eb49
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b202ba00fc253ab8275f2.md
@@ -0,0 +1,122 @@
+---
+id: 672b202ba00fc253ab8275f2
+title: Task 89
+challengeType: 22
+dashedName: task-89
+---
+
+<!-- (audio) Linda: Not yet, but we plan to. I think it would be helpful to get some real-world feedback before we roll it out completely. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Not yet, but we plan to. I think it would be helpful to get some BLANK BLANK before we BLANK completely.`
+
+## --blanks--
+
+`real-world`
+
+### --feedback--
+
+This means things that happen in everyday life, not in ideas or practice tests. It shows how something works in normal, real situations. It's a compound word, remember to use `-`.
+
+---
+
+`feedback`
+
+### --feedback--
+
+This means advice or comments someone gives about your work to help you do better or improve.
+
+---
+
+`roll it out`
+
+### --feedback--
+
+This phrase of three words means to launch or release a product to the public or a larger group of users. The second word is a pronoun.
+
+# --explanation--
+
+`Real-world` means something that happens in real life, not in a test or a made-up situation. For example:  
+
+`We tested the new app in real-world conditions to see how it works.` - It means the app was tested in normal, everyday situations to make sure it works well.
+
+`Feedback` means advice or comments to help someone improve. For example:  
+
+`The project manager gave feedback on my work so I can do better next time.` - It means the project manager offers advice to help you improve your work.
+
+`Roll it out` means to launch or release a product or service to a wider audience. For example:
+
+`We will roll out the new feature to all users next month.` - It indicates that the new feature will be released for public use, moving from testing to being available to everyone.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 43.38,
+      "finishTimestamp": 48.66
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 2.32,
+      "dialogue": {
+        "text": "Not yet, but we plan to.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 2.32,
+      "finishTime": 4.8,
+      "dialogue": {
+        "text": "I think it would be helpful to get some real-world feedback",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 4.8,
+      "finishTime": 6.28,
+      "dialogue": {
+        "text": "before we roll it out completely.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 6.78
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b25e2a59e2956bca1a42f.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b25e2a59e2956bca1a42f.md
new file mode 100644
index 00000000000..3a80dbb2aab
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b25e2a59e2956bca1a42f.md
@@ -0,0 +1,120 @@
+---
+id: 672b25e2a59e2956bca1a42f
+title: Task 90
+challengeType: 19
+dashedName: task-90
+---
+
+<!-- (audio) Linda: Not yet, but we plan to. I think it would be helpful to get some real-world feedback before we roll it out completely. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Linda mean when she says `it would be helpful`?
+
+## --answers--
+
+She thinks they don’t need any more feedback.
+
+### --feedback--
+
+Linda mentions that getting feedback from real users would be useful, so more feedback is needed.
+
+---
+
+She believes that getting real-world feedback could improve the project.
+
+---
+
+She feels they should skip feedback and launch immediately.
+
+### --feedback--
+
+Linda actually suggests that feedback from real users is valuable before rolling out the project completely.
+
+---
+
+She is unsure if feedback is necessary.
+
+### --feedback--
+
+Linda clearly states that getting feedback would be helpful, which shows she thinks it is important.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+Linda uses the phrase `it would be helpful` to express that real-world feedback might benefit the project. In this case, `would` is used to suggest that something could be beneficial or is likely to improve the situation. For example, saying `it would be helpful to review our code` means reviewing the code might make the project better or easier to manage.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 43.38,
+      "finishTimestamp": 48.66
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 2.32,
+      "dialogue": {
+        "text": "Not yet, but we plan to.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 2.32,
+      "finishTime": 4.8,
+      "dialogue": {
+        "text": "I think it would be helpful to get some real-world feedback",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 4.8,
+      "finishTime": 6.28,
+      "dialogue": {
+        "text": "before we roll it out completely.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 6.78
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b307e7447905887103086.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b307e7447905887103086.md
new file mode 100644
index 00000000000..58a03618d54
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b307e7447905887103086.md
@@ -0,0 +1,102 @@
+---
+id: 672b307e7447905887103086
+title: Task 91
+challengeType: 19
+dashedName: task-91
+---
+
+<!-- (audio) Linda: Not yet, but we plan to. I think it would be helpful to get some real-world feedback before we roll it out completely. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+Accordng to Linda's statement, What might they do next?
+
+## --answers--
+
+They might stop the project for now.
+
+### --feedback--
+
+Linda is discussing getting feedback before moving forward, not stopping the project.
+
+---
+
+They might decide to roll out the project immediately.
+
+### --feedback--
+
+Linda mentions that they plan to get feedback before rolling it out completely, so launching immediately is not the next step.
+
+---
+
+They might gather real-world feedback before moving forward.
+
+---
+
+They might work on a completely new version of the project.
+
+### --feedback--
+
+Linda's focus is on getting feedback before continuing with the current version of the project, not starting from scratch.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Linda indicates that the next logical step is to gather real-world feedback before fully releasing the project.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 43.38,
+      "finishTimestamp": 48.56
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 6.18,
+      "dialogue": {
+        "text": "Not yet, but we plan to I think it would be helpful To get some real-world feedback before we roll it out completely",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 6.68
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b33b15bd8bf5b2523772a.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b33b15bd8bf5b2523772a.md
new file mode 100644
index 00000000000..c9dc79ade1c
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b33b15bd8bf5b2523772a.md
@@ -0,0 +1,88 @@
+---
+id: 672b33b15bd8bf5b2523772a
+title: Task 92
+challengeType: 22
+dashedName: task-92
+---
+
+<!-- REVIEW -->
+
+# --description--
+
+This is a review of the entire dialogue you just studied.
+
+# --instructions--
+
+Place the following phrases in the correct spot: `software update`, `real-world feedback`, `all scenarios`, `voice command`, `brainstorming solutions` and `improve its accuracy` .
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Bob: Hi Linda, have you been working on the new BLANK features?`
+
+`Linda: Yes, I’ve been testing them since the latest BLANK. We’ve had some positive feedback, but there are still a few bugs to fix.`
+
+`Bob: How long have you been focusing on this evaluation?`
+
+`Linda: For the past couple of weeks. I’ve been trying to cover BLANK to ensure that the commands work consistently.`
+
+`Bob: Have you had any problems with voice recognition?`
+
+`Linda: A few. The system hasn't been responding well to certain accents, and it struggles with background noise. We need to BLANK.`
+
+`Bob: What about the integration with other systems? Has it been seamless?`
+
+`Linda: Not entirely. It’s had issues connecting with our older devices, but we’re working on it. The development team has been BLANK.`
+
+`Bob: That's a good start. By the way, have we tested it with real users yet?`
+
+`Linda: Not yet, but we plan to. I think it would be helpful to get some BLANK before we roll it out completely.`
+
+## --blanks--
+
+`voice command`
+
+### --feedback--
+
+This phrase refer to the system recognizing and responding to spoken commands.
+
+---
+
+`software update`
+
+### --feedback--
+
+This phrase refers to the changes made to the software.
+
+---
+
+`all scenarios`
+
+### --feedback--
+
+This means every possible situation or use case.
+
+---
+
+`improve its accuracy`
+
+### --feedback--
+
+This refers to making the system more precise and reliable.
+
+---
+
+`brainstorming solutions`
+
+### --feedback--
+
+This refers to thinking of and discussing possible solutions to problems.
+
+---
+
+`real-world feedback`
+
+### --feedback--
+
+This refers to feedback gathered from actual users, as opposed to theoretical or internal testing.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b42dafa37fe61e80a2b40.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b42dafa37fe61e80a2b40.md
new file mode 100644
index 00000000000..59ee4aa76f8
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b42dafa37fe61e80a2b40.md
@@ -0,0 +1,66 @@
+---
+id: 672b42dafa37fe61e80a2b40
+title: Task 93
+challengeType: 19
+dashedName: task-93
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Linda and her team are working on a new voice command system for smart homes. The goal is to make it easier for everyone, including people with disabilities, to control devices like lights and doors using their voice.`
+
+`One challenge is making sure the system understands different accents. The team has been testing the system with users from different regions, but there are still some problems with background noise. `
+
+`For example, the system sometimes has trouble understanding voices in noisy rooms, like kitchens or living rooms with TVs or radios on. To fix this, they are improving the system’s ability to filter out noise and better recognize commands.`
+
+`Before launching the system, the team plans to gather real-world feedback from users to see how well it works in different home settings. This feedback will help them make the system more accurate and ready for everyone to use.`
+
+What is the main goal of the voice command system?
+
+## --answers--
+
+To make devices more advanced with extra features.
+
+### --feedback--
+
+The main goal is to make it easier for all users, including those with disabilities, to control devices with their voice.
+
+---
+
+To allow all users, including those with disabilities, to control devices using their voice.
+
+---
+
+To add security to the smart home system.
+
+### --feedback--
+
+The goal is about ease of use, not adding security features.
+
+---
+
+To reduce the cost of smart home devices.
+
+### --feedback--
+
+Linda's team is focused on usability, not on lowering costs.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, pay attention to the section that explains the main goal of the voice command system.
+
+The paragraph states that the system is being developed to help people with disabilities control devices using their voice, which highlights the goal of making it easier for all users, including those with disabilities, to interact with their smart home.
+
+Look for an option that reflects the primary purpose of making devices easier to control with voice commands.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4539b9ab5d645e7dcfb8.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4539b9ab5d645e7dcfb8.md
new file mode 100644
index 00000000000..9f00d624428
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4539b9ab5d645e7dcfb8.md
@@ -0,0 +1,66 @@
+---
+id: 672b4539b9ab5d645e7dcfb8
+title: Task 94
+challengeType: 19
+dashedName: task-94
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Linda and her team are working on a new voice command system for smart homes. The goal is to make it easier for everyone, including people with disabilities, to control devices like lights and doors using their voice.`
+
+`One challenge is making sure the system understands different accents. The team has been testing the system with users from different regions, but there are still some problems with background noise.`
+
+`For example, the system sometimes has trouble understanding voices in noisy rooms, like kitchens or living rooms with TVs or radios on. To fix this, they are improving the system’s ability to filter out noise and better recognize commands.`
+
+`Before launching the system, the team plans to gather real-world feedback from users to see how well it works in different home settings. This feedback will help them make the system more accurate and ready for everyone to use.`
+
+What is the main challenge the team faces in developing the system?
+
+## --answers--
+
+Adding more features to the system.
+
+### --feedback--
+
+The main challenge is ensuring the system works accurately with different accents and background noise.
+
+---
+
+Improving the visual design.
+
+### --feedback--
+
+The challenge is related to voice recognition, not design.
+
+---
+
+Ensuring the system works well with different accents and background noise.
+
+---
+
+Reducing the size of the devices.
+
+### --feedback--
+
+The paragraph doesn’t mention device size as a challenge.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+To find the correct answer, focus on the part where Linda explains the challenge the team is facing.
+
+The paragraph highlights that the team is facing difficulties with background noise and accents, which makes it challenging for the system to accurately recognize commands in noisy environments. 
+
+Look for an option that addresses the issue of the system’s ability to handle accents and background noise.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b46def9325065dbc7b29f.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b46def9325065dbc7b29f.md
new file mode 100644
index 00000000000..460e6901feb
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b46def9325065dbc7b29f.md
@@ -0,0 +1,66 @@
+---
+id: 672b46def9325065dbc7b29f
+title: Task 95
+challengeType: 19
+dashedName: task-95
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Linda and her team are working on a new voice command system for smart homes. The goal is to make it easier for everyone, including people with disabilities, to control devices like lights and doors using their voice.`
+
+`One challenge is making sure the system understands different accents. The team has been testing the system with users from different regions, but there are still some problems with background noise.`
+
+`For example, the system sometimes has trouble understanding voices in noisy rooms, like kitchens or living rooms with TVs or radios on. To fix this, they are improving the system’s ability to filter out noise and better recognize commands.`
+
+`Before launching the system, the team plans to gather real-world feedback from users to see how well it works in different home settings. This feedback will help them make the system more accurate and ready for everyone to use.`
+
+Why does the team want to gather real-world feedback?
+
+## --answers--
+
+To test the system only in a lab environment.
+
+### --feedback--
+
+Real-world feedback is meant to test the system in real home settings, not just in a lab.
+
+---
+
+To improve the system’s visual design.
+
+### --feedback--
+
+Real-world feedback focuses on functionality and accuracy, not design.
+
+---
+
+To see how the system performs under perfect conditions.
+
+### --feedback--
+
+The team wants to see how it performs in various real-life environments, including noisy ones.
+
+---
+
+To understand how the system performs in actual home environments.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+To find the correct answer, pay attention to the section about why the team wants to gather real-world feedback.
+
+The paragraph states that real-world feedback will help the team understand how well the system works `in different home settings`, which is crucial for identifying issues that may not show up in controlled testing environments.
+
+Look for an option that focuses on how the team plans to use feedback from actual users to improve the system.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4812ec997567058875da.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4812ec997567058875da.md
new file mode 100644
index 00000000000..a76e226cc24
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b4812ec997567058875da.md
@@ -0,0 +1,66 @@
+---
+id: 672b4812ec997567058875da
+title: Task 96
+challengeType: 19
+dashedName: task-96
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Linda and her team are working on a new voice command system for smart homes. The goal is to make it easier for everyone, including people with disabilities, to control devices like lights and doors using their voice.`
+
+`One challenge is making sure the system understands different accents. The team has been testing the system with users from different regions, but there are still some problems with background noise.`
+
+`For example, the system sometimes has trouble understanding voices in noisy rooms, like kitchens or living rooms with TVs or radios on. To fix this, they are improving the system’s ability to filter out noise and better recognize commands.`
+
+`Before launching the system, the team plans to gather real-world feedback from users to see how well it works in different home settings. This feedback will help them make the system more accurate and ready for everyone to use.`
+
+What is the team doing to solve the problems with the system?
+
+## --answers--
+
+Brainstorming solutions.
+
+---
+
+Ignoring the issues for now.
+
+### --feedback--
+
+The team is actively working on solutions, not ignoring the problems.
+
+---
+
+Creating a completely new system.
+
+### --feedback--
+
+The team is focused on improving the current system, not starting from scratch.
+
+---
+
+Waiting for users to find solutions.
+
+### --feedback--
+
+The team itself is brainstorming ways to solve the issues.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+To find the correct answer, look at the part where Linda talks about what the team is doing to solve the system's issues.
+
+The paragraph mentions that the development team `has been brainstorming solutions` to fix the issues with voice recognition, which shows they are actively working on improving the system.
+
+Look for an option that describes the team’s approach to solving the problems they’ve encountered.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b491aa3c094689007baf1.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b491aa3c094689007baf1.md
new file mode 100644
index 00000000000..29990a49c32
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672b491aa3c094689007baf1.md
@@ -0,0 +1,66 @@
+---
+id: 672b491aa3c094689007baf1
+title: Task 97
+challengeType: 19
+dashedName: task-97
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`Linda and her team are working on a new voice command system for smart homes. The goal is to make it easier for everyone, including people with disabilities, to control devices like lights and doors using their voice.`
+
+`One challenge is making sure the system understands different accents. The team has been testing the system with users from different regions, but there are still some problems with background noise.`
+
+`For example, the system sometimes has trouble understanding voices in noisy rooms, like kitchens or living rooms with TVs or radios on. To fix this, they are improving the system’s ability to filter out noise and better recognize commands.`
+
+`Before launching the system, the team plans to gather real-world feedback from users to see how well it works in different home settings. This feedback will help them make the system more accurate and ready for everyone to use.`
+
+What is most likely the next step for the team after the current testing phase?
+
+## --answers--
+
+They will immediately launch the system to all users.
+
+### --feedback--
+
+The team is still testing and improving the system before it’s ready for a wider launch.
+
+---
+
+They will focus on gathering real-world feedback from users.
+
+---
+
+They will stop testing and move on to a different project.
+
+### --feedback--
+
+The team is currently focusing on improving the voice command system and has not mentioned ending the project.
+
+---
+
+They will test the system with a new group of developers.
+
+### --feedback--
+
+The focus is on user testing and ensuring the system works for real users, not just developers.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, pay attention to the section where Linda talks about getting feedback from users.
+
+The paragraph explains that the team plans to test the system with real users, so it's likely that the next step will be gathering feedback from them to improve the system before its full launch.
+
+Look for an option that suggests gathering feedback from users as the next logical step after testing.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672c8c2429273886b1519110.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672c8c2429273886b1519110.md
new file mode 100644
index 00000000000..3f69b5961a3
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672c8c2429273886b1519110.md
@@ -0,0 +1,178 @@
+---
+id: 672c8c2429273886b1519110
+title: "Dialogue 4: Accessibility Training for Developers"
+challengeType: 21
+dashedName: dialogue-4-accessibility-training-for-developers
+---
+
+# --description--
+
+Watch the video below to understand the context of the upcoming lessons.
+
+# --assignment--
+
+Watch the video.
+
+# --scene--
+
+```json
+{
+ "setup": {
+   "background": "interview-room1.png",
+   "characters": [
+     {
+       "character": "Anna",
+       "position": { "x": -25, "y": 0, "z": 1 }
+     },
+     {
+       "character": "James",
+       "position": { "x": 125, "y": 0, "z": 1 }
+     }
+   ],
+   "audio": {
+     "filename": "B1_4-4.mp3",
+     "startTime": 1
+   },
+   "alwaysShowDialogue": true
+ },
+ "commands": [
+   {
+     "character": "Anna",
+     "position": { "x": 25, "y": 0, "z": 1 },
+     "startTime": 0
+   },
+   {
+     "character": "James",
+     "position": { "x": 70, "y": 0, "z": 1 },
+     "startTime": 0.5
+   },
+   {
+     "character": "Anna",
+     "startTime": 1,
+     "finishTime": 5.14,
+     "dialogue": {
+       "text": "Hi, James. Have you been reviewing the training feedback for our accessibility program?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 5.64,
+     "finishTime": 8.36,
+     "dialogue": {
+       "text": "Yes, I've been working on it since the last training session.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 8.54,
+     "finishTime": 12.66,
+     "dialogue": {
+       "text": "We've received a lot of positive comments, but there are some areas we still need to improve.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Anna",
+     "startTime": 13.18,
+     "finishTime": 15.62,
+     "dialogue": {
+       "text": "That's great to hear. How long have we been running these sessions?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 16.22,
+     "finishTime": 18.42,
+     "dialogue": {
+       "text": "We've been conducting them for about six months now.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 18.72,
+     "finishTime": 24.64,
+     "dialogue": {
+       "text": "It's been a gradual process, but we've seen steady progress in our team's understanding of accessibility.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Anna",
+     "startTime": 25.46,
+     "finishTime": 28.7,
+     "dialogue": {
+       "text": "Are there any specific areas where people haven't been performing as expected?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 28.7,
+     "finishTime": 33.5,
+     "dialogue": {
+       "text": "Yes, the interactive activities haven't been as effective as we thought.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 33.98,
+     "finishTime": 37.86,
+     "dialogue": {
+       "text": "It seems that some of the scenarios weren't relevant enough for the participants.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Anna",
+     "startTime": 38.38,
+     "finishTime": 41.34,
+     "dialogue": {
+       "text": "I see. Have you identified any solutions to make them more engaging?",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 41.94,
+     "finishTime": 47.72,
+     "dialogue": {
+       "text": "We're working on it. The instructional design team has been brainstorming ideas to make the sessions more interactive.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "James",
+     "startTime": 47.94,
+     "finishTime": 51.32,
+     "dialogue": {
+       "text": "We've also considered incorporating more real-life scenarios.",
+       "align": "right"
+     }
+   },
+   {
+     "character": "Anna",
+     "startTime": 51.98,
+     "finishTime": 56.72,
+     "dialogue": {
+       "text": "That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals.",
+       "align": "left"
+     }
+   },
+   {
+     "character": "James",
+     "position": { "x": 125, "y": 0, "z": 1 },
+     "startTime": 57.22
+   },
+   {
+     "character": "Anna",
+     "position": { "x": -25, "y": 0, "z": 1 },
+     "startTime": 57.72
+   }
+ ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cc5e1786cba9181ea64b6.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cc5e1786cba9181ea64b6.md
new file mode 100644
index 00000000000..96769434c7a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cc5e1786cba9181ea64b6.md
@@ -0,0 +1,92 @@
+---
+id: 672cc5e1786cba9181ea64b6
+title: Task 98
+challengeType: 22
+dashedName: task-98
+---
+
+<!-- (Audio) Anna: Hi James, have you been reviewing the training feedback for our accessibility program? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Hi James, have you been reviewing the BLANK for our BLANK?`
+
+## --blanks--
+
+`training feedback`
+
+### --feedback--
+
+These two words together refer to comments or responses provided after a training session, indicating how effective or useful the session was.
+
+---
+
+`accessibility program`
+
+### --feedback--
+
+This is a program designed to make resources or environments usable for all people, including those with disabilities.
+
+# --explanation--
+
+`Training feedback` refers to comments, reviews, or suggestions gathered from participants after a training session. For example:
+
+- `The training feedback highlighted areas where we can improve the course material.` - Here, `feedback` helps identify strengths and weaknesses in the `training`.
+
+An `accessibility program` is a set of initiatives aimed at making resources or environments accessible to everyone, particularly people with disabilities. For example:
+
+- `Our accessibility program includes features like screen readers and adjustable font sizes.` - In this example, the program focuses on inclusive tools and features for people with different abilities.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.14
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 5.14,
+      "dialogue": {
+        "text": "Hi, James. Have you been reviewing the training feedback for our accessibility program?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 5.64
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cca3d15975a9390545877.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cca3d15975a9390545877.md
new file mode 100644
index 00000000000..a9bed39e2e3
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cca3d15975a9390545877.md
@@ -0,0 +1,102 @@
+---
+id: 672cca3d15975a9390545877
+title: Task 99
+challengeType: 19
+dashedName: task-99
+---
+
+<!-- (Audio) Anna: Hi James, have you been reviewing the training feedback for our accessibility program? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Anna want to know from James?
+
+## --answers--
+
+If James has started working on a new training session.
+
+### --feedback--
+
+Anna is asking specifically about the feedback, not starting a new training session.
+
+---
+
+If James has created a new accessibility program.
+
+### --feedback--
+
+Anna is asking if James has been reviewing feedback, not if he created a new program.
+
+---
+
+If James has been reviewing the training feedback for the accessibility program.
+
+---
+
+If James needs help with the accessibility program.
+
+### --feedback--
+
+Anna's question does not ask if James needs help; it focuses on whether he has reviewed the feedback.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Anna’s question is specifically about whether James has reviewed the feedback from a training program related to accessibility.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 0,
+      "finishTimestamp": 4.14
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 5.14,
+      "dialogue": {
+        "text": "Hi, James. Have you been reviewing the training feedback for our accessibility program?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 5.64
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672ccc988693199500b4cdfd.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672ccc988693199500b4cdfd.md
new file mode 100644
index 00000000000..543215b20a6
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672ccc988693199500b4cdfd.md
@@ -0,0 +1,102 @@
+---
+id: 672ccc988693199500b4cdfd
+title: Task 100
+challengeType: 19
+dashedName: task-100
+---
+
+<!-- (Audio) James: Yes, I’ve been working on it since the last training session. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How does James express when he started working on the project?
+
+## --answers--
+
+By saying he only started after receiving new feedback.
+
+### --feedback--
+
+James doesn't specify that he needed new feedback to begin; he uses a specific past event to mark the start of his work.
+
+---
+
+By mentioning a specific point in time.
+
+---
+
+By saying he finished working soon after the last session.
+
+### --feedback--
+
+James’s statement indicates ongoing work, not that he finished shortly after starting.
+
+---
+
+By explaining that he only works when a new training session happens.
+
+### --feedback--
+
+James is emphasizing when he started continuous work, not limiting his work to specific events.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+James uses the phrase `since the last training session` to indicate when he started working on the project. The word `since` marks a specific point in the past, showing an action that began at that time and is ongoing.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 4.64,
+      "finishTimestamp": 7.46
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 3.82,
+      "dialogue": {
+        "text": "Yes, I've been working on it since the last training session.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 4.32
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cce96163ee1965d3e6133.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cce96163ee1965d3e6133.md
new file mode 100644
index 00000000000..3eebcc92d47
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cce96163ee1965d3e6133.md
@@ -0,0 +1,109 @@
+---
+id: 672cce96163ee1965d3e6133
+title: Task 101
+challengeType: 22
+dashedName: task-101
+---
+
+<!-- (Audio) James: We've received a lot of positive comments, but there are some areas we still need to improve. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`We've received a lot of BLANK, but there are some BLANK we still need to BLANK.`
+
+## --blanks--
+
+`positive comments`
+
+### --feedback--
+
+These two words together refer to favorable or encouraging feedback given by people who attended the session.
+
+---
+
+`areas`
+
+### --feedback--
+
+This word in the plural form refers to specific parts or aspects of the program.
+
+---
+
+`improve`
+
+### --feedback--
+
+This verb means to make something better or more effective.
+
+# --explanation--
+
+`Positive comments` are encouraging or complimentary responses given by participants. They show what people liked about the session. For example:
+
+`We received positive comments about the clarity of the instructions.` - It indicates that people found the instructions clear and helpful.
+
+`Areas to improve` refer to parts of a project, program, or product that could be made better. For example:
+
+`We have areas to improve in customer service response time.` - It highlights specific aspects (in this case, response time) that need enhancement to meet a higher standard.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 7.54,
+      "finishTimestamp": 11.66
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 2.74,
+      "dialogue": {
+        "text": "We've received a lot of positive comments,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 2.8,
+      "finishTime": 5.12,
+      "dialogue": {
+        "text": "but there are some areas we still need to improve.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.62
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cd0939d2cca9849f200d2.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cd0939d2cca9849f200d2.md
new file mode 100644
index 00000000000..fd6210dc800
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672cd0939d2cca9849f200d2.md
@@ -0,0 +1,111 @@
+---
+id: 672cd0939d2cca9849f200d2
+title: Task 102
+challengeType: 19
+dashedName: task-102
+---
+
+<!-- (Audio) James: We've received a lot of positive comments, but there are some areas we still need to improve. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How is the training being received according to James?
+
+## --answers--
+
+It has only received negative feedback.
+
+### --feedback--
+
+James mentions positive comments, so the training is not only receiving negative feedback.
+
+---
+
+It is not receiving much feedback yet.
+
+### --feedback--
+
+James talks about receiving a lot of positive comments, so feedback is actively coming in.
+
+---
+
+There are no suggestions for improvement.
+
+### --feedback--
+
+James mentions that there are areas for improvement, indicating that some suggestions were made.
+
+---
+
+It has received positive feedback, but there are still some things to improve.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+James describes the training as generally well-received, as he mentions `a lot of positive comments`. However, he also notes that there are still areas needing improvement, which shows a balanced view: positive reception with room for further enhancement.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 7.54,
+      "finishTimestamp": 11.66
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 2.74,
+      "dialogue": {
+        "text": "We've received a lot of positive comments,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 2.8,
+      "finishTime": 5.12,
+      "dialogue": {
+        "text": "but there are some areas we still need to improve.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 5.62
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc70c1f0bc8c822b0dfc6.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc70c1f0bc8c822b0dfc6.md
new file mode 100644
index 00000000000..ac16c131c5d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc70c1f0bc8c822b0dfc6.md
@@ -0,0 +1,102 @@
+---
+id: 672dc70c1f0bc8c822b0dfc6
+title: Task 103
+challengeType: 19
+dashedName: task-103
+---
+
+<!-- (Audio) Anna: That's great to hear. How long have we been running these sessions? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Anna want to know about the training sessions?
+
+## --answers--
+
+If the sessions are effective.
+
+### --feedback--
+
+Anna is asking about the duration, not about the effectiveness of the sessions.
+
+---
+
+How many people have attended the sessions.
+
+### --feedback--
+
+Anna is asking about how long the sessions have been running, not the number of attendees.
+
+---
+
+If more sessions are planned in the future.
+
+### --feedback--
+
+Anna's question is about the length of time they have been running these sessions, not about future plans.
+
+---
+
+The duration of time they have been running these sessions.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Anna uses `how long` in her question to about the length of time the training sessions have been in place.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 12.08,
+      "finishTimestamp": 14.82
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 3.74,
+      "dialogue": {
+        "text": "That's great to hear. How long have we been running these sessions?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.24
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc928d8765dc9f923ca71.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc928d8765dc9f923ca71.md
new file mode 100644
index 00000000000..03a703b3611
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dc928d8765dc9f923ca71.md
@@ -0,0 +1,104 @@
+---
+id: 672dc928d8765dc9f923ca71
+title: Task 104
+challengeType: 22
+dashedName: task-104
+---
+
+<!-- (Audio) James: We've been conducting them for about six months now. It's been a gradual process, but we've seen steady progress in our teams' understanding of accessibility. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`We've been conducting them for about six months now. It's been a BLANK, but we've seen BLANK in our teams' BLANK of accessibility.`
+
+## --blanks--
+
+`gradual process`
+
+### --feedback--
+
+These two words together describe something that happens slowly, step-by-step over time.
+
+---
+
+`steady progress`
+
+### --feedback--
+
+These two words together mean continuous improvement without interruptions.
+
+---
+
+`understanding`
+
+### --feedback--
+
+This word refers to the knowledge or awareness people have about a specific topic.
+
+# --explanation--
+
+A `gradual process` refers to something that develops slowly, over time, rather than happening quickly. For example:
+
+`Learning a new skill is often a gradual process.` - This means that gaining a new skill takes time and happens step-by-step, not all at once.
+
+`Steady progress` means continuous, consistent improvement without interruptions. For example:
+
+`The team has made steady progress in completing the project.` - This shows that the team is moving forward regularly and effectively, without major delays.
+
+`Understanding` refers to a person’s knowledge or awareness about a subject. For example:
+
+`Her understanding of coding improved with practice.` - It highlights how her knowledge of coding grew as she spent more time practicing.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 15.22,
+      "finishTimestamp": 23.64
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 9.42,
+      "dialogue": {
+        "text": "We've been conducting them for about six months now. It's been a gradual process, but we've seen steady progress in our team's understanding of accessibility.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 9.92
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de8ad97d683d3734ce5cd.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de8ad97d683d3734ce5cd.md
new file mode 100644
index 00000000000..da035c1e18a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de8ad97d683d3734ce5cd.md
@@ -0,0 +1,120 @@
+---
+id: 672de8ad97d683d3734ce5cd
+title: Task 105
+challengeType: 19
+dashedName: task-105
+---
+
+<!-- (Audio) James: It's been a gradual process, but we've seen steady progress in our teams' understanding of accessibility. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is James' attitude toward the progress of the training sessions?
+
+## --answers--
+
+He is frustrated that progress has been slow.
+
+### --feedback--
+
+James doesn’t express frustration; he acknowledges the gradual nature of the process positively.
+
+---
+
+He feels the progress is too small to notice.
+
+### --feedback--
+
+James mentions `steady progress`, showing he sees noticeable improvements over time.
+
+---
+
+He is optimistic about the team's improvement.
+
+---
+
+He is uncertain if the sessions are making any difference.
+
+### --feedback--
+
+James describes the progress as steady, indicating confidence in the sessions' impact.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+James's statement reflects a positive and optimistic attitude toward the training sessions. Although he notes that it's been a `gradual process`, he also observes `steady progress`, showing that he believes in the effectiveness of the sessions and appreciates the ongoing improvements in his team's understanding.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 17.72,
+      "finishTimestamp": 23.74
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 2.56,
+      "dialogue": {
+        "text": "It's been a gradual process,",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 2.56,
+      "finishTime": 4.54,
+      "dialogue": {
+        "text": "but we've seen steady progress in",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 4.54,
+      "finishTime": 7.02,
+      "dialogue": {
+        "text": "our team's understanding of accessibility.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 7.52
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de9bfc24d99d49218eb41.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de9bfc24d99d49218eb41.md
new file mode 100644
index 00000000000..58b4a170478
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672de9bfc24d99d49218eb41.md
@@ -0,0 +1,92 @@
+---
+id: 672de9bfc24d99d49218eb41
+title: Task 106
+challengeType: 22
+dashedName: task-106
+---
+
+<!-- (Audio) Anna: Are there any specific areas where people haven't been performing as expected? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Are there any BLANK areas where people haven't been performing BLANK?`
+
+## --blanks--
+
+`specific`
+
+### --feedback--
+
+This word refers to particular or exact things being discussed.
+
+---
+
+`as expected`
+
+### --feedback--
+
+This phrase of two words means in the way that was anticipated or hoped for.
+
+# --explanation--
+
+`Specific` refers to something particular or distinct. For example:
+
+`She had specific questions about the project requirements.` - This means she had particular questions about certain details of the project, not just general questions.
+
+`As expected` means something turned out the way people thought it would. For example:
+
+`The software update improved performance, as expected, because the team fixed key bugs.` - It means the performance improved just as the team had predicted, thanks to the bug fixes in the update.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.46,
+      "finishTimestamp": 27.8
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 4.34,
+      "dialogue": {
+        "text": "Are there any specific areas where people haven't been performing as expected?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.84
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672debc75e32a8d6e2593eac.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672debc75e32a8d6e2593eac.md
new file mode 100644
index 00000000000..23aad93fe0a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672debc75e32a8d6e2593eac.md
@@ -0,0 +1,102 @@
+---
+id: 672debc75e32a8d6e2593eac
+title: Task 107
+challengeType: 19
+dashedName: task-107
+---
+
+<!-- (Audio) Anna: Are there any specific areas where people haven't been performing as expected? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Anna want to find out?
+
+## --answers--
+
+If people are happy with their work.
+
+### --feedback--
+
+Anna is asking about areas where people may not be doing as well as expected, not about happiness.
+
+---
+
+If there are too many tasks for the team to finish.
+
+### --feedback--
+
+Anna’s question is about performance in some areas, not the number of tasks.
+
+---
+
+If there are certain areas where people are not performing as well as expected.
+
+---
+
+If people need more tools to do their work better.
+
+### --feedback--
+
+Anna’s question is about finding areas of lower performance, not about needing more tools.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Anna’s question is asking if there are any parts of the work where the team isn’t doing as well as they were expected to.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.46,
+      "finishTimestamp": 27.8
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 4.34,
+      "dialogue": {
+        "text": "Are there any specific areas where people haven't been performing as expected?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.84
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dec93f008b3d8169568e8.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dec93f008b3d8169568e8.md
new file mode 100644
index 00000000000..c4d04408605
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672dec93f008b3d8169568e8.md
@@ -0,0 +1,88 @@
+---
+id: 672dec93f008b3d8169568e8
+title: Task 108
+challengeType: 19
+dashedName: task-108
+---
+
+<!-- (Audio) Anna: Are there any specific areas where people haven't been performing as expected? -->
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What would be a positive answer to Anna's question?
+
+## --answers--
+
+`Everyone is doing well, and there are no areas that need improvement.`
+
+---
+
+`Some areas need improvement because people are not meeting expectations.`
+
+### --feedback--
+
+This answer points out areas needing improvement, which is not a positive response.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+A positive answer to Anna’s question would mean that everyone is performing as well as expected, and there is nothing that needs to be improved.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 24.46,
+      "finishTimestamp": 27.8
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 4.34,
+      "dialogue": {
+        "text": "Are there any specific areas where people haven't been performing as expected?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.84
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672deeb8a3167fda01889d18.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672deeb8a3167fda01889d18.md
new file mode 100644
index 00000000000..e0f673706e5
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672deeb8a3167fda01889d18.md
@@ -0,0 +1,113 @@
+---
+id: 672deeb8a3167fda01889d18
+title: Task 109
+challengeType: 22
+dashedName: task-109
+---
+
+<!-- (Audio) James: Yes, the interactive activities haven't been as effective as we thought. It seems that some of the scenarios weren't relevant enough for the participants. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Yes, the BLANK BLANK haven't been as effective as we thought. It seems that some of the BLANK weren't relevant enough for the participants.`
+
+## --blanks--
+
+`interactive`
+
+### --feedback--
+
+This word describes something that involves active participation, like exercises or activities.
+
+---
+
+`activities`
+
+### --feedback--
+
+This word refers to tasks or exercises that people take part in. It's plural form.
+
+---
+
+`scenarios`
+
+### --feedback--
+
+This word in the plural form means examples or situations created to help people understand or practice something.
+
+# --explanation--
+
+`Interactive` means something that lets people participate or take action, rather than just watching or listening. For example:
+
+`The training included interactive games to help learners practice their skills.` - It shows that people are actively involved in the games, not just observing.
+
+`Activities` are tasks or exercises people do to learn or practice skills. For example:
+
+`The activities in the workshop helped everyone understand the material better.` - This means that the tasks helped people engage with and understand the content.
+
+`Scenarios` are specific situations or examples created to help people imagine or explore real-life situations. For example,
+
+`In the project meeting, we discussed different scenarios to prepare for possible challenges.` - Here, it means to imagine situations that help the team think about potential issues and find solutions ahead of time.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 27.7,
+      "finishTimestamp": 36.96
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 5.8,
+      "dialogue": {
+        "text": "Yes, the interactive activities haven't been as effective as we thought.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 6.28,
+      "finishTime": 10.26,
+      "dialogue": {
+        "text": "It seems that some of the scenarios weren't relevant enough for the participants.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 10.76
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e0ec28d829ee2b5e909f3.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e0ec28d829ee2b5e909f3.md
new file mode 100644
index 00000000000..193270d3b95
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e0ec28d829ee2b5e909f3.md
@@ -0,0 +1,111 @@
+---
+id: 672e0ec28d829ee2b5e909f3
+title: Task 110
+challengeType: 19
+dashedName: task-110
+---
+
+<!-- (Audio) James: Yes, the interactive activities haven't been as effective as we thought. It seems that some of the scenarios weren't relevant enough for the participants. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+How does James feel about the effectiveness of the activities?
+
+## --answers--
+
+He thinks the activities were very successful.
+
+### --feedback--
+
+James mentions that the activities were not as effective as they had expected, so this is not correct.
+
+---
+
+He feels the activities were less effective than expected.
+
+---
+
+He believes the activities were well-received by all participants.
+
+### --feedback--
+
+James points out that the activities were not fully relevant, meaning they weren’t well-received by everyone.
+
+---
+
+He thinks the activities covered all relevant scenarios.
+
+### --feedback--
+
+James actually suggests that some scenarios were not relevant enough, so this option is not correct.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+James is expressing the activities were not as effective as he had hoped. He specifically mentions that some scenarios were not relevant.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "James",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 27.7,
+      "finishTimestamp": 36.96
+    }
+  },
+  "commands": [
+    {
+      "character": "James",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "James",
+      "startTime": 1,
+      "finishTime": 5.8,
+      "dialogue": {
+        "text": "Yes, the interactive activities haven't been as effective as we thought.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "startTime": 6.28,
+      "finishTime": 10.26,
+      "dialogue": {
+        "text": "It seems that some of the scenarios weren't relevant enough for the participants.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "James",
+      "opacity": 0,
+      "startTime": 10.76
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e16bcc0d877e5d3eb7f4e.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e16bcc0d877e5d3eb7f4e.md
new file mode 100644
index 00000000000..8efae5669b4
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e16bcc0d877e5d3eb7f4e.md
@@ -0,0 +1,80 @@
+---
+id: 672e16bcc0d877e5d3eb7f4e
+title: Task 111
+challengeType: 22
+dashedName: task-111
+---
+
+<!-- (Audio) Anna: I see. Have you identified any solutions to make them more engaging? -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`I see. Have you identified any solutions to make them more BLANK?`
+
+## --blanks--
+
+`engaging`
+
+### --feedback--
+
+This word describes something that catches people’s interest and keeps them involved.
+
+# --explanation--
+
+`Engaging` means something that captures people's interest and keeps them involved or motivated. For example:
+
+`The app uses engaging visuals and challenges to keep users interested.` - It shows that the visuals and challenges make the app fun and keep people wanting to use it.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 37.18,
+      "finishTimestamp": 40.44
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 4.26,
+      "dialogue": {
+        "text": "I see. Have you identified any solutions to make them more engaging?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.76
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e17e63be5dce6ff5b9189.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e17e63be5dce6ff5b9189.md
new file mode 100644
index 00000000000..cb2c465ff46
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e17e63be5dce6ff5b9189.md
@@ -0,0 +1,102 @@
+---
+id: 672e17e63be5dce6ff5b9189
+title: Task 112
+challengeType: 19
+dashedName: task-112
+---
+
+<!-- (Audio) Anna: I see. Have you identified any solutions to make them more engaging? -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Anna want to know?
+
+## --answers--
+
+If there are ways to make the activities more interesting.
+
+---
+
+If the activities are difficult for participants to complete.
+
+### --feedback--
+
+Anna is not asking if the activities are too hard; she is asking about ways to make them `more engaging`.
+
+---
+
+If they should stop doing the activities.
+
+### --feedback--
+
+Anna is interested in improving the activities, not stopping them.
+
+---
+
+If the activities already meet all the learning goals.
+
+### --feedback--
+
+Anna’s question suggests she thinks the activities could be improved to be `more engaging`, so she isn’t assuming they already meet all goals.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+Anna is asking if James has found any ways to make the activities `more engaging`. She wants to know if there are solutions that could make them more interesting and keep participants involved.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 37.18,
+      "finishTimestamp": 40.44
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 4.26,
+      "dialogue": {
+        "text": "I see. Have you identified any solutions to make them more engaging?",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 4.76
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e18d6146c94e80107c6b9.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e18d6146c94e80107c6b9.md
new file mode 100644
index 00000000000..504ed7bca2d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e18d6146c94e80107c6b9.md
@@ -0,0 +1,122 @@
+---
+id: 672e18d6146c94e80107c6b9
+title: Task 113
+challengeType: 22
+dashedName: task-113
+---
+
+<!-- (Audio) James: We're working on it. The instructional design team has been brainstorming ideas to make the sessions more interactive. We're also considering incorporating more real-life scenarios. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`We're working on it. The instructional design team has been BLANK ideas to make the sessions more interactive. We're also considering BLANK more BLANK.`
+
+## --blanks--
+
+`brainstorming`
+
+### --feedback--
+
+This word means coming together to think of as many creative ideas as possible.
+
+---
+
+`incorporating`
+
+### --feedback--
+
+This word means adding or including something as part of a larger plan or project. It's `-ing` form of a verb.
+
+---
+
+`real-life scenarios`
+
+### --feedback--
+
+This phrase refers to realistic examples or situations that participants might actually encounter in their jobs or daily life. The first word is a compound word.
+
+# --explanation--
+
+`Brainstorming` is when people gather ideas in a group, trying to think of creative or useful solutions. For example:
+
+`The team is brainstorming ideas for a new product feature.` - It shows they are working together to come up with as many ideas as possible.
+
+`Incorporating` means adding or including something in a plan, activity, or project. For example:
+
+`They are incorporating customer feedback into the product design.` - This means they are adding the feedback as part of the design process to improve the product.
+
+`Real-life scenarios` are practical situations similar to those participants might face in reality, helping them practice responses and develop skills for actual challenges. For example:
+
+`The training uses real-life scenarios, such as troubleshooting a common technical issue.` - Here, `real-life scenarios` make the training relevant and directly applicable by using realistic situations.
+
+# --scene--
+	
+```json
+{
+	  "setup": {
+	    "background": "interview-room1.png",
+	    "characters": [
+	      {
+	        "character": "James",
+	        "position": {
+	          "x": 50,
+	          "y": 15,
+	          "z": 1.2
+	        },
+	        "opacity": 0
+	      }
+	    ],
+	    "audio": {
+	      "filename": "B1_4-4.mp3",
+	      "startTime": 1,
+	      "startTimestamp": 40.64,
+	      "finishTimestamp": 50.42
+	    }
+	  },
+	  "commands": [
+	    {
+	      "character": "James",
+	      "opacity": 1,
+	      "startTime": 0
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 1,
+	      "finishTime": 2.08,
+	      "dialogue": {
+	        "text": "We're working on it.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 2.09,
+	      "finishTime": 7.08,
+	      "dialogue": {
+	        "text": "The instructional design team has been brainstorming ideas to make the sessions more interactive.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 7.09,
+	      "finishTime": 10.78,
+	      "dialogue": {
+	        "text": "We've also considered incorporating more real-life scenarios.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "opacity": 0,
+	      "startTime": 11.28
+	    }
+	  ]
+	}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1bb0774f2fea953e9388.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1bb0774f2fea953e9388.md
new file mode 100644
index 00000000000..3b9615df9c4
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1bb0774f2fea953e9388.md
@@ -0,0 +1,120 @@
+---
+id: 672e1bb0774f2fea953e9388
+title: Task 114
+challengeType: 19
+dashedName: task-114
+---
+
+<!-- (Audio) James: We're working on it. The instructional design team has been brainstorming ideas to make the sessions more interactive. We're also considering incorporating more real-life scenarios. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What is the current status of improving the sessions, according to James?
+
+## --answers--
+
+The team has finished making improvements to the sessions.
+
+### --feedback--
+
+James indicates that they are still working on ideas and haven't finished yet.
+
+---
+
+The team has been brainstorming ideas to make the sessions better.
+
+---
+
+The team hasn’t yet considered any changes to the sessions.
+
+### --feedback--
+
+James mentions that they have already started thinking about ways to improve the sessions.
+
+---
+
+The team feels the sessions are as interactive as they need to be.
+
+### --feedback--
+
+James says they are working on making the sessions more interactive, so they don’t feel the sessions are finished.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+James uses the `Present Perfect Continuous` tense (`has been brainstorming`) to show that the team’s work on improving the sessions is ongoing. This tense expresses that they started brainstorming in the past and are still actively doing it now, indicating continuous effort in finding new ideas.
+
+# --scene--
+	
+```json
+{
+	  "setup": {
+	    "background": "interview-room1.png",
+	    "characters": [
+	      {
+	        "character": "James",
+	        "position": {
+	          "x": 50,
+	          "y": 15,
+	          "z": 1.2
+	        },
+	        "opacity": 0
+	      }
+	    ],
+	    "audio": {
+	      "filename": "B1_4-4.mp3",
+	      "startTime": 1,
+	      "startTimestamp": 40.64,
+	      "finishTimestamp": 50.42
+	    }
+	  },
+	  "commands": [
+	    {
+	      "character": "James",
+	      "opacity": 1,
+	      "startTime": 0
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 1,
+	      "finishTime": 2.08,
+	      "dialogue": {
+	        "text": "We're working on it.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 2.09,
+	      "finishTime": 7.08,
+	      "dialogue": {
+	        "text": "The instructional design team has been brainstorming ideas to make the sessions more interactive.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 7.09,
+	      "finishTime": 10.78,
+	      "dialogue": {
+	        "text": "We've also considered incorporating more real-life scenarios.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "opacity": 0,
+	      "startTime": 11.28
+	    }
+	  ]
+	}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1c3031816ceb9dccc66a.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1c3031816ceb9dccc66a.md
new file mode 100644
index 00000000000..35436066285
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1c3031816ceb9dccc66a.md
@@ -0,0 +1,120 @@
+---
+id: 672e1c3031816ceb9dccc66a
+title: Task 115
+challengeType: 19
+dashedName: task-115
+---
+
+<!-- (Audio) James: We're working on it. The instructional design team has been brainstorming ideas to make the sessions more interactive. We're also considering incorporating more real-life scenarios. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What might the team do next?
+
+## --answers--
+
+Add activities that focus on memorizing definitions.
+
+### --feedback--
+
+Memorizing definitions doesn’t involve real-life application or hands-on practice, which James implies they are aiming for.
+
+---
+
+Use theoretical case studies with no practical application.
+
+### --feedback--
+
+Theoretical case studies alone don’t fully connect to real-life tasks, which James wants to include.
+
+---
+
+Have participants discuss unrelated topics to build general communication skills.
+
+### --feedback--
+
+Unrelated discussions don’t meet the goal of incorporating relevant, real-life situations.
+
+---
+
+Create exercises that use realistic situations participants might encounter on the job.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+Since James mentions `incorporating more real-life scenarios`, they’re likely planning to add exercises that reflect situations participants could actually encounter in their roles. This makes the training more engaging and relevant, unlike focusing on definitions, unrelated discussions, or purely theoretical case studies.
+
+# --scene--
+	
+```json
+{
+	  "setup": {
+	    "background": "interview-room1.png",
+	    "characters": [
+	      {
+	        "character": "James",
+	        "position": {
+	          "x": 50,
+	          "y": 15,
+	          "z": 1.2
+	        },
+	        "opacity": 0
+	      }
+	    ],
+	    "audio": {
+	      "filename": "B1_4-4.mp3",
+	      "startTime": 1,
+	      "startTimestamp": 40.64,
+	      "finishTimestamp": 50.42
+	    }
+	  },
+	  "commands": [
+	    {
+	      "character": "James",
+	      "opacity": 1,
+	      "startTime": 0
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 1,
+	      "finishTime": 2.08,
+	      "dialogue": {
+	        "text": "We're working on it.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 2.09,
+	      "finishTime": 7.08,
+	      "dialogue": {
+	        "text": "The instructional design team has been brainstorming ideas to make the sessions more interactive.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "startTime": 7.09,
+	      "finishTime": 10.78,
+	      "dialogue": {
+	        "text": "We've also considered incorporating more real-life scenarios.",
+	        "align": "center"
+	      }
+	    },
+	    {
+	      "character": "James",
+	      "opacity": 0,
+	      "startTime": 11.28
+	    }
+	  ]
+	}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1f1a51e86aed84df7c94.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1f1a51e86aed84df7c94.md
new file mode 100644
index 00000000000..4bfc37f41a7
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1f1a51e86aed84df7c94.md
@@ -0,0 +1,92 @@
+---
+id: 672e1f1a51e86aed84df7c94
+title: Task 116
+challengeType: 22
+dashedName: task-116
+---
+
+<!-- (Audio) Anna: That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`That makes sense. Let's BLANK to monitor the progress and ensure we're meeting our accessibility BLANK.`
+
+## --blanks--
+
+`keep in touch`
+
+### --feedback--
+
+This phrase of three words means to stay in contact or communicate regularly.
+
+---
+
+`goals`
+
+### --feedback--
+
+This word in the plural form refers to specific targets or objectives the team is trying to achieve.
+
+# --explanation--
+
+`Keep in touch` means to stay in regular communication with someone. For example:
+
+`Let’s keep in touch about the project updates.` - This means staying connected and sharing information to make sure everyone is updated on the project's progress.
+
+`Goals` are the specific targets or objectives a person or team wants to achieve. It the plural form of `goal`. For example:
+
+`Our goal is to improve user satisfaction.` - In this case, the `goal` is to make users happier with the product, and all efforts are focused on reaching that target.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 50.98,
+      "finishTimestamp": 55.72
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 5.74,
+      "dialogue": {
+        "text": "That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 6.24
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1fff03af3aeed5d7a84b.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1fff03af3aeed5d7a84b.md
new file mode 100644
index 00000000000..e70fc4691f5
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672e1fff03af3aeed5d7a84b.md
@@ -0,0 +1,102 @@
+---
+id: 672e1fff03af3aeed5d7a84b
+title: Task 117
+challengeType: 19
+dashedName: task-117
+---
+
+<!-- (Audio) Anna: That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals. -->
+
+# --instructions--
+
+Listen to the audio and answer the question below.
+
+# --questions--
+
+## --text--
+
+What does Anna think about James' ideas, and what does she suggest?
+
+## --answers--
+
+She disagrees with James' ideas and suggests starting a new approach.
+
+### --feedback--
+
+Anna expresses agreement with James, not disagreement, and wants to stay updated rather than start over.
+
+---
+
+She thinks James' ideas are confusing and suggests focusing only on accessibility goals.
+
+### --feedback--
+
+Anna doesn’t find James’ ideas confusing; she agrees and wants to monitor progress on their shared goals.
+
+---
+
+She agrees with James and suggests they stay in contact to monitor progress.
+
+---
+
+She thinks James' ideas are unnecessary and suggests stopping the project.
+
+### --feedback--
+
+Anna doesn’t suggest stopping; she supports James’ ideas and wants to stay updated.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+Anna agrees with James' approach, saying `That makes sense`, which shows she understands and supports his ideas. She also suggests `keeping in touch to monitor progress`, indicating her interest in staying updated to ensure they reach their shared goals.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "interview-room1.png",
+    "characters": [
+      {
+        "character": "Anna",
+        "position": {
+          "x": 50,
+          "y": 15,
+          "z": 1.2
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-4.mp3",
+      "startTime": 1,
+      "startTimestamp": 50.98,
+      "finishTimestamp": 55.72
+    }
+  },
+  "commands": [
+    {
+      "character": "Anna",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Anna",
+      "startTime": 1,
+      "finishTime": 5.74,
+      "dialogue": {
+        "text": "That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Anna",
+      "opacity": 0,
+      "startTime": 6.24
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f4b05585d501f533789b4.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f4b05585d501f533789b4.md
new file mode 100644
index 00000000000..2108b8fc779
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f4b05585d501f533789b4.md
@@ -0,0 +1,78 @@
+---
+id: 672f4b05585d501f533789b4
+title: Task 118
+challengeType: 22
+dashedName: task-118
+---
+
+<!-- REVIEW -->
+
+# --description--
+
+This is a review of the entire dialogue you just studied.
+
+# --instructions--
+
+Place the following phrases in the correct spot: `gradual process` , `more engaging`, `training feedback`, `real-life scenarios` and `performing as expected`.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Anna: Hi James, have you been reviewing the BLANK for our accessibility program?`
+
+`James: Yes, I’ve been working on it since the last training session. We've received a lot of positive comments, but there are some areas we still need to improve.`
+
+`Anna: That's great to hear. How long have we been running these sessions?`
+
+`James: We've been conducting them for about six months now. It's been a BLANK, but we've seen steady progress in our teams' understanding of accessibility.`
+
+`Anna: Are there any specific areas where people haven't been BLANK?`
+
+`James: Yes, the interactive activities haven't been as effective as we thought. It seems that some of the scenarios weren't relevant enough for the participants.`
+
+`Anna: I see. Have you identified any solutions to make them BLANK?`
+
+`James: We're working on it. The instructional design team has been brainstorming ideas to make the sessions more interactive. We're also considering incorporating more BLANK.`
+
+`Anna: That makes sense. Let's keep in touch to monitor the progress and ensure we're meeting our accessibility goals.`
+
+## --blanks--
+
+`training feedback`
+
+### --feedback--
+
+This phrase refers to the feedback received from participants about the training sessions to see what worked well and what didn’t.
+
+---
+
+`gradual process`
+
+### --feedback--
+
+This phrase means that the progress has been slow and steady over time.
+
+---
+
+`performing as expected`
+
+### --feedback--
+
+This phrase means meeting the standard or reaching the expected level of performance.
+
+---
+
+`more engaging`
+
+### --feedback--
+
+This phrase means more interesting and interactive for participants.
+
+---
+
+`real-life scenarios`
+
+### --feedback--
+
+This phrase means realistic examples making the sessions more relevant and practical for participants.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f606201263928a06b2a04.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f606201263928a06b2a04.md
new file mode 100644
index 00000000000..4cf8d46470d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f606201263928a06b2a04.md
@@ -0,0 +1,64 @@
+---
+id: 672f606201263928a06b2a04
+title: Task 119
+challengeType: 19
+dashedName: task-119
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`After Anna and James discussed ways to enhance accessibility training, they created a plan to meet the goals of making products accessible to everyone. This training will provide the team with an understanding of key accessibility principles and skills to identify and address common issues.`
+
+`The training will start by conducting an overview of essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation. To make the sessions engaging, the plan includes interactive activities and real-life scenarios — like navigating without a mouse or relying on a screen reader. These exercises are designed to show the importance of removing accessibility barriers.`
+
+`Throughout the training, they will gather feedback to understand what’s effective and find areas to improve. This approach will help the team develop practical skills and make accessibility a natural part of their work.`
+
+What is the main goal of the accessibility training?
+
+## --answers--
+
+To train the team in advanced software development skills.
+
+### --feedback--
+
+The training is focused on accessibility, not on general software skills.
+
+---
+
+To introduce the team to new accessibility tools only.
+
+### --feedback--
+
+The training includes more than just tools; it covers principles and skills as well.
+
+---
+
+To make products accessible to everyone.
+
+---
+
+To develop creative design skills.
+
+### --feedback--
+
+The training is focused on accessibility, not on creative design.
+
+## --video-solution--
+
+3
+
+# --explanation--
+
+To find the correct answer, pay attention to the main goal of the accessibility training mentioned in the text.
+
+The first paragraph states that the training aims to make products accessible to everyone.
+
+Look for the option that highlights this purpose.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f630337512b2b62595731.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f630337512b2b62595731.md
new file mode 100644
index 00000000000..ee74b5a8bde
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f630337512b2b62595731.md
@@ -0,0 +1,64 @@
+---
+id: 672f630337512b2b62595731
+title: Task 120
+challengeType: 19
+dashedName: task-120
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`After Anna and James discussed ways to enhance accessibility training, they created a plan to meet the goals of making products accessible to everyone. This training will provide the team with an understanding of key accessibility principles and skills to identify and address common issues.`
+
+`The training will start by conducting an overview of essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation. To make the sessions engaging, the plan includes interactive activities and real-life scenarios — like navigating without a mouse or relying on a screen reader. These exercises are designed to show the importance of removing accessibility barriers.`
+
+`Throughout the training, they will gather feedback to understand what’s effective and find areas to improve. This approach will help the team develop practical skills and make accessibility a natural part of their work.`
+
+What does the training overview include?
+
+## --answers--
+
+Only practical activities.
+
+### --feedback--
+
+The training also includes an overview of essential accessibility concepts, not just activities.
+
+---
+
+A list of accessibility challenges only.
+
+### --feedback--
+
+The overview includes basic accessibility concepts, not just a list of challenges.
+
+---
+
+An introduction to common software issues.
+
+### --feedback--
+
+The overview focuses on accessibility concepts, not general software issues.
+
+---
+
+An overview of essential accessibility concepts like color contrast and screen reader compatibility.
+
+## --video-solution--
+
+4
+
+# --explanation--
+
+To find the correct answer, focus on what the training overview includes.
+
+The paragraph explains that it covers `essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation`.
+
+Look for the option that mentions these specific concepts as part of the overview.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f63cadac41a2c9b1897a1.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f63cadac41a2c9b1897a1.md
new file mode 100644
index 00000000000..3062ed0bf5d
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f63cadac41a2c9b1897a1.md
@@ -0,0 +1,64 @@
+---
+id: 672f63cadac41a2c9b1897a1
+title: Task 121
+challengeType: 19
+dashedName: task-121
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`After Anna and James discussed ways to enhance accessibility training, they created a plan to meet the goals of making products accessible to everyone. This training will provide the team with an understanding of key accessibility principles and skills to identify and address common issues.`
+
+`The training will start by conducting an overview of essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation. To make the sessions engaging, the plan includes interactive activities and real-life scenarios — like navigating without a mouse or relying on a screen reader. These exercises are designed to show the importance of removing accessibility barriers.`
+
+`Throughout the training, they will gather feedback to understand what’s effective and find areas to improve. This approach will help the team develop practical skills and make accessibility a natural part of their work.`
+
+How does the training plan make the sessions engaging?
+
+## --answers--
+
+By using interactive activities and real-life scenarios.
+
+---
+
+By teaching advanced programming techniques.
+
+### --feedback--
+
+The training is about accessibility and does not focus on advanced programming.
+
+---
+
+By only giving lectures on accessibility.
+
+### --feedback--
+
+The sessions include interactive activities and scenarios, not just lectures.
+
+---
+
+By assigning individual projects only.
+
+### --feedback--
+
+The sessions are made engaging through group activities and scenarios, not individual projects.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+To find the correct answer, note how the training plan aims to make the sessions engaging.
+
+The paragraph mentions the use of `interactive activities and real-life scenarios`, such as `navigating without a mouse or relying on a screen reader`.
+
+Look for the option that includes these activities, as they are central to engaging the team in accessibility practices.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f64ba4f91492e1192b829.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f64ba4f91492e1192b829.md
new file mode 100644
index 00000000000..f2680e76b8b
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f64ba4f91492e1192b829.md
@@ -0,0 +1,64 @@
+---
+id: 672f64ba4f91492e1192b829
+title: Task 122
+challengeType: 19
+dashedName: task-122
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`After Anna and James discussed ways to enhance accessibility training, they created a plan to meet the goals of making products accessible to everyone. This training will provide the team with an understanding of key accessibility principles and skills to identify and address common issues.`
+
+`The training will start by conducting an overview of essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation. To make the sessions engaging, the plan includes interactive activities and real-life scenarios — like navigating without a mouse or relying on a screen reader. These exercises are designed to show the importance of removing accessibility barriers.`
+
+`Throughout the training, they will gather feedback to understand what’s effective and find areas to improve. This approach will help the team develop practical skills and make accessibility a natural part of their work.`
+
+Why are real-life scenarios included in the training?
+
+## --answers--
+
+To provide practice with general software issues.
+
+### --feedback--
+
+The real-life scenarios focus on accessibility issues, not general software topics.
+
+---
+
+To highlight why removing accessibility barriers is essential.
+
+---
+
+To teach troubleshooting techniques.
+
+### --feedback--
+
+The scenarios aim to demonstrate accessibility issues, not general troubleshooting skills.
+
+---
+
+To make coding projects more complex.
+
+### --feedback--
+
+The scenarios are included to help understand accessibility, not to increase complexity.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, focus on the purpose of including real-life scenarios in the training.
+
+The paragraph explains that these scenarios `show the importance of removing accessibility barriers`.
+
+Look for the option that reflects this purpose as the reason for using realistic situations.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f657580a34f2f78e278e2.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f657580a34f2f78e278e2.md
new file mode 100644
index 00000000000..2225eacac2a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/672f657580a34f2f78e278e2.md
@@ -0,0 +1,64 @@
+---
+id: 672f657580a34f2f78e278e2
+title: Task 123
+challengeType: 19
+dashedName: task-123
+---
+
+<!-- READING -->
+
+# --instructions--
+
+Read the text and answer the question below.
+
+# --questions--
+
+## --text--
+
+`After Anna and James discussed ways to enhance accessibility training, they created a plan to meet the goals of making products accessible to everyone. This training will provide the team with an understanding of key accessibility principles and skills to identify and address common issues.`
+
+`The training will start by conducting an overview of essential accessibility concepts, such as color contrast, screen reader compatibility, and keyboard navigation. To make the sessions engaging, the plan includes interactive activities and real-life scenarios — like navigating without a mouse or relying on a screen reader. These exercises are designed to show the importance of removing accessibility barriers.`
+
+`Throughout the training, they will gather feedback to understand what’s effective and find areas to improve. This approach will help the team develop practical skills and make accessibility a natural part of their work.`
+
+What is the purpose of gathering training feedback?
+
+## --answers--
+
+To decide if the training should be canceled.
+
+### --feedback--
+
+The feedback is collected to understand what’s effective and find areas to improve, not to cancel the training.
+
+---
+
+To identify areas to improve and understand what’s effective.
+
+---
+
+To add more theoretical concepts to the training.
+
+### --feedback--
+
+The feedback aims to make the training more practical, not theoretical.
+
+---
+
+To see how quickly participants finish the activities.
+
+### --feedback--
+
+The purpose of feedback is to assess the training’s effectiveness, not activity speed.
+
+## --video-solution--
+
+2
+
+# --explanation--
+
+To find the correct answer, focus on why training feedback is gathered.
+
+The paragraph states that feedback helps identify `what’s effective` and points out `areas to improve`.
+
+Look for the option that describes feedback as a way to assess and enhance the training process.
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de712f2dc6db0cfe76b31.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de712f2dc6db0cfe76b31.md
new file mode 100644
index 00000000000..2a1c2f9402a
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de712f2dc6db0cfe76b31.md
@@ -0,0 +1,89 @@
+---
+id: 673de712f2dc6db0cfe76b31
+title: Task 82
+challengeType: 22
+dashedName: task-82
+---
+
+<!-- (audio) Linda: Not entirely. It's had issues connecting with our older devices, but we're working on it. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Not BLANK. It's had issues connecting with our older devices, but we're working on it.`
+
+## --blanks--
+
+`entirely`
+
+### --feedback--
+
+This word means completely or fully.
+
+# --explanation--
+
+The word `entirely` means completely or fully. The phrase `not entirely` indicates that something is not complete or perfect. For example:
+
+`I don’t entirely agree with his opinion.` - It means you don’t fully agree with the opinion, suggesting some level of disagreement.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.5,
+      "finishTimestamp": 35.94
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 1.82,
+      "dialogue": {
+        "text": "Not entirely",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 1.82,
+      "finishTime": 5.44,
+      "dialogue": {
+        "text": "It's had issues connecting with our older devices, but we're working on it.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 5.94
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de859a60bb4b728b727b4.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de859a60bb4b728b727b4.md
new file mode 100644
index 00000000000..7215618744e
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673de859a60bb4b728b727b4.md
@@ -0,0 +1,109 @@
+---
+id: 673de859a60bb4b728b727b4
+title: Task 83
+challengeType: 22
+dashedName: task-83
+---
+
+<!-- (audio) Linda: Not entirely. It's had issues connecting with our older devices, but we're working on it. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`Not entirely. BLANK had BLANK BLANK with our older devices, but we're working on it.`
+
+## --blanks--
+
+`It's`
+
+### --feedback--
+
+This is a contraction for `it has`. The first word is capitalized.
+
+---
+
+`issues`
+
+### --feedback--
+
+This word in the plural form means problems or difficulties.
+
+---
+
+`connecting`
+
+### --feedback--
+
+This is the `-ing` form of a verb, which means to join or link things together.
+
+# --explanation--
+
+`It's` is a contraction of `it has` in this context, used to indicate that something has occurred or been experienced. 
+
+`Issues` refers to problems or challenges. In the sentence, it highlights the difficulties the system is experiencing.
+
+The word `connecting` is the `-ing` form of the verb `connect`. It is used to describe the action of establishing a link or joining something together. For example:
+
+`The engineer is connecting the wires to complete the circuit.` - It describes the ongoing action of joining the wires.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 31.5,
+      "finishTimestamp": 35.94
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 1.82,
+      "dialogue": {
+        "text": "Not entirely",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "startTime": 1.82,
+      "finishTime": 5.44,
+      "dialogue": {
+        "text": "It's had issues connecting with our older devices, but we're working on it.",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 5.94
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673deb32b4eb12bd975aa2e8.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673deb32b4eb12bd975aa2e8.md
new file mode 100644
index 00000000000..cce9acc6999
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673deb32b4eb12bd975aa2e8.md
@@ -0,0 +1,90 @@
+---
+id: 673deb32b4eb12bd975aa2e8
+title: Task 84
+challengeType: 22
+dashedName: task-84
+---
+
+<!-- (audio) Linda: The development team has been brainstorming solutions. -->
+
+# --instructions--
+
+Listen to the audio and complete the sentence below.
+
+# --fillInTheBlank--
+
+## --sentence--
+
+`The development team has been BLANK BLANK.`
+
+## --blanks--
+
+`brainstorming`
+
+### --feedback--
+
+This word means generating or sharing ideas to solve a problem.
+
+---
+
+`solutions`
+
+### --feedback--
+
+This word in the plural form refers to answers or methods to resolve a problem.
+
+# --explanation--
+
+`Brainstorming` refers to the activity of generating and sharing ideas, often in a group, to solve a problem or come up with innovative solutions. It involves creativity and collaboration. For example:
+
+`The marketing team is brainstorming ideas for the new campaign.` - It describes the ongoing action of the team coming together to think creatively and discuss potential strategies for their campaign.
+
+`Solutions` are the answers or methods used to address and resolve problems. In the context of the sentence, it indicates the ideas the team is working on to fix or improve a situation.
+
+# --scene--
+
+```json
+{
+  "setup": {
+    "background": "company2-boardroom.png",
+    "characters": [
+      {
+        "character": "Linda",
+        "position": {
+          "x": 50,
+          "y": 0,
+          "z": 1.4
+        },
+        "opacity": 0
+      }
+    ],
+    "audio": {
+      "filename": "B1_4-3.mp3",
+      "startTime": 1,
+      "startTimestamp": 36,
+      "finishTimestamp": 38.24
+    }
+  },
+  "commands": [
+    {
+      "character": "Linda",
+      "opacity": 1,
+      "startTime": 0
+    },
+    {
+      "character": "Linda",
+      "startTime": 1,
+      "finishTime": 3.24,
+      "dialogue": {
+        "text": "The development team has been brainstorming solutions",
+        "align": "center"
+      }
+    },
+    {
+      "character": "Linda",
+      "opacity": 0,
+      "startTime": 3.74
+    }
+  ]
+}
+```
diff --git a/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673df0c78bdd11c7195010cb.md b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673df0c78bdd11c7195010cb.md
new file mode 100644
index 00000000000..cb5d3ffedb2
--- /dev/null
+++ b/curriculum/challenges/english/24-b1-english-for-developers/learn-present-perfect-while-talking-about-accessibility/673df0c78bdd11c7195010cb.md
@@ -0,0 +1,38 @@
+---
+id: 673df0c78bdd11c7195010cb
+title: Task 88
+challengeType: 19
+dashedName: task-88
+---
+
+<!-- SPEAKING -->
+
+# --instructions--
+
+This task doesn't have audio. Read the question below and select the correct answer.
+
+# --questions--
+
+## --text--
+
+A colleague asks if your team has implemented the new feature yet. What is the best way to respond if you haven’t started but plan to?
+
+## --answers--
+
+`Not yet, but we plan to.`
+
+---
+
+`Yes, it’s been running perfectly for years.`
+
+### --feedback--
+
+It implies that the feature has been implemented and in use for years, which contradicts the fact that the feature is new and hasn’t been started yet.
+
+## --video-solution--
+
+1
+
+# --explanation--
+
+The response `Not yet, but we plan to` clearly acknowledges that the feature has not been implemented while expressing the intention to do so.