giúp mik với .hứa  sẽ chấm điểm
16. It’s at least a month since                                      Tom.

      A. I last seen               B. I last see                 C. I have last seen       D. I last saw

17. We                          almost every lesson in this book so far.

      A. study                      B. studies                    C. has studied             D. have studied

18. We                         that television program.

      A. never watch                                                B. not never watch

      C. have never watched                                   D. has never watched

19. Up to then, I                      such a big fire.

      A. have never seen                                          B. had never seen

      C. never seen                                                   D. never see

20. I                  her since I                    a student.

      A. know/ am                                                   B. knew/ was

      C. have known/ am                                         D. have known/ was

21.                   get tired of answering the same questions every day?

      A. Have you ever                                            B. Had you ever

      C. Do you ever                                                D. Are you ever

22. She                         working on that manuscript for 2 year now.

      A. will be                    B. has been                  C. had been                 D. is

23. I                  there once a long time ago and                       back since.

      A. went/have not been                                    B. go/am not

      C. have gone/was                                            D. was going/had not been

24. In the last hundred years, traveling                       much easier and more comfortable.

      A. becomes                 B. has become             C. became                   D. will become

25. It is raining now. It began raining two hours ago. So it                for two hours.

      A. rains                        B. is raining                 C. has rained               D. rained

26. Mike is playing chess. How long                          he                   ?

      A. did/play                                                      B.is/playing

      C. has/play                                                      D. has/been playing

27. Today is Thursday and she                        late twice this week. She                    late yesterday and on Monday.

      A. is/was                                                         B. has been/is

      C. has been/was                                              D. has been/had been

28. He                                      in the same house since 1975.

      A. has lived                 B. is living                   C. lived                       D. had lived

29. We                         him since he                married.

      A. didn’t see/got                                             B. haven’t seen/got

      C. don’t/get                                                     D. hadn’t seen/got

30. It                for two hours and the ground is too wet to play tennis.

      A. is raining                 B. had rained              C. has rained               D. was raining