1.teachs
2.is buying
3.thought
4.doesn't eat
5.writes
6.are you waiting
7.didn't work
8.likes
9.doesn't study
10.haven't planned
11.didnt eat
12. has been washed
13.has learned
14.have just bought
15.am looking
16.doesn't study
17.have
18.has worked
19.doesn't study
20.are her students always talking( cấu trúc be always + Ving : phàn nàn về việc gì)