30．I like________. I can sing many songs(歌曲).

29．My shoes are________ the bed.

28．It’s hot in________. I like swimming.

27．My mother is a________ in a hospital.

26．What________ are trees? They’re green.

25．I can_______ the piano.

24．The library is in________ of the lab．

23．We are________. We like school.

22．What’s this in________?

21．________ are 20 books on the desk.