Finished implementing a Solutions version for each exercise

src/demo/listening.json

@@ -1,16 +1,16 @@
 {
   "audio": {
-    "title": "",
-    "source": "",
-    "transcript": "",
+    "source": "https://www.sndup.net/hqvf/d",
     "repeatableTimes": 3
   },
   "module": "listening",
   "minTimer": 5,
+  "id": "1c70c6a2-8d4c-4dfc-849c-f89786fa38dd",
   "exercises": [
     {
       "type": "multipleChoice",
       "prompt": "Select the appropriate option",
+      "id": "57f21739-146d-4d1f-aed9-274f351ca27f",
       "questions": [
         {
           "id": "1",
@@ -66,6 +66,7 @@
       "type": "writeBlanks",
       "prompt": "Complete the notes below by writing NO MORE THAN THREE WORDS in the spaces provided.",
       "maxWords": 3,
+      "id": "81215364-b18e-4717-9a33-a6dfc1816960",
       "text": "The Government plans to give ${{14}} to assist the farmers. This money was to be spent on improving Sydney’s {{15}} but has now been re-allocated. Australia has experienced its worst drought in over fifty years. Farmers say that the money will not help them because it is {{16}}.",
       "solutions": [
         {

src/demo/reading.json

@@ -5,11 +5,13 @@
   },
   "module": "reading",
   "minTimer": 5,
+  "id": "ffb738a5-265c-4daa-85c4-3681d3f8b48b",
   "exercises": [
     {
       "type": "fillBlanks",
       "prompt": "Complete the summary below. Click a blank to select the corresponding word for it.\nThere are more words than spaces so you will not use them all. You may use any of the words more than once.",
       "allowRepetition": true,
+      "id": "acf930d1-3615-4b7d-b057-9f6e60b30f74",
       "solutions": [
         {
           "id": "1",
@@ -71,6 +73,7 @@
     {
       "type": "matchSentences",
       "prompt": "Look at the following notes that have been made about the matches described in Reading Passage 1. Decide which type of match (A-H) corresponds with each description and write your answers in boxes 9 15 on your answer sheet.",
+      "id": "404437ff-2bc0-44b5-9e32-40ef4eedb023",
       "sentences": [
         {
           "id": "9",

src/demo/writing.json

@@ -8,5 +8,7 @@
       "limit": 5
     }
   },
+  "id": "908286eb-2c5f-4d43-8806-0e15379143dd",
+  "exercises": [],
   "minTimer": 5
 }