Cho mk dấu (+) nhé!!!

11. do
12. is working
13. am looking up
14. was pointing- wanted
15. are studying
16. goes
17. is knowing
18. sings - sing
19.
a. am sitting
b. are you doing - am helping
20.
a. did you wash
b. shines
c.have never washed

21.
a are you going
b. am going
c. am going to - don't go
d. go - will go
22.
a. do you hear
b. listen
23. leaves - works
24. don't go - go - prefer
25. have already spoken - are learning
26. gets - is - gets
27. barks - is
28. wonder - travelled
29. write - write - will go
30. will have - is looking
31. smoke - am studying - smoke - study
32. don't like - smell - love - taste

Câu 14 của ...^.... sai 100%.
Vì đề bài chỉ ns thì HTD và thì HTTD thôi.
P/s:Nhiều câu khác nữa (sử dụng thì QKD, QKTD, HTHT,....)