Fixed more or less reading import, attempted to do listening

app/mappers/reading.py

@@ -3,7 +3,7 @@ from typing import Dict, Any
 from app.dtos.exams.reading import (
     Part, Exam, Context, FillBlanksExercise,
     TrueFalseExercise, MatchSentencesExercise,
-    WriteBlanksExercise
+    WriteBlanksExercise, MultipleChoice
 )
 
 
@@ -20,13 +20,18 @@ class ReadingMapper:
                 'fillBlanks': FillBlanksExercise,
                 'trueFalse': TrueFalseExercise,
                 'matchSentences': MatchSentencesExercise,
-                'writeBlanks': WriteBlanksExercise
+                'writeBlanks': WriteBlanksExercise,
+                'multipleChoice': MultipleChoice,
             }
 
             exercises = []
             for exercise in part_exercises:
                 exercise_type = exercise['type']
-                exercises.append(model_map[exercise_type](**exercise))
+                if exercise_type in model_map:
+                    model_class = model_map[exercise_type]
+                    exercises.append(model_class(**exercise))
+                else:
+                    raise ValueError(f"Unknown exercise type: {exercise_type}")
 
             part_kwargs = {
                 "exercises": exercises,