Audio for correct answers to multiple choice questions.
I don't know if it would be possible but a voice over of the correct answer as well as the written answer to multiple choice questions would help reinforce the spoken language. I'd really like to hear as well as read the answer sometimes when I'm not confident of my pronunciation.
I've thought the same thing. Or have it automatically say a phrase when you check it (even the wrong ones!)
If you press comment you can hear the audio by clicking on the speaker icon. The audio is present even if no one has commented on it yet. Stumbled on this by accident (you don't have to post a comment) and use it a lot