Firstly, the place that shows the correct answer of the recording contents too many kinds of type,: about word , pronounce and sentences,which make me feel very confused. I really want to have a filter to choose the type that i want to see.

Also he green color of better words that it correct is too light, and it is not as eye-catching as the wrong red.,which makes me remember the wrong answers easily.The green color needs to be darker to attract attention.