21. I must have a bath. I have been gardening all the afternoon

A. was gardening      B. have gardened      C. have been gardening       D. had been gardening

22. The team hasn't won a single match so far this season

A. doesn’t win          B. didn’t win C. hasn't won            D. hadn’t won

23. By the time you receive this letter, I will have left for the USA

A. have left    B. will leave  C. will have left        D. am leaving

24. Up to now, the manager has learned a lot of information about his secretary.

      A. learned           B. has learned           C. had learned         D. learns

25. Where is Mary? _ She is doing her homework in her room.

      A. is performing B. is making  C. is doing     D. is learning

26. While I was cycling along the road, I saw a friend of mine.

      A. was cycling    B. have cycled          C. cycled      D. am cycling

27. By the time I have typed this report, I will give you a ring.

     A. type      B. will type    C. have typed D. will have typed

28. While my mother was watching a film on TV, my father was cooking dinner. It was March 8th yesterday.

     A. watched           B. was watching                   C. had watched                     D. watches

29. The plane from Dallas took off two hours late, so I missed my connecting flight from Frankfurt to London.

     A. took on            B. took in                            C. took over  D. took off

30. When we came, a party was being held in the hall.

     A. is being held   B. had being held     C. will be held          D. was being held

 31. He has lived in the same house since 1975.

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

 32. When I came to visit her last night, she was having a bath.

            A. is having   B. was having           C. has D. had

 33.When we arrived at the restaurant, the others had left.

            A. left B. have left    C. had left      D. are leaving

 34. By the end of 2010 we will have worked in Ho Chi Minh City for 30 years.

      A. work                             B. will work                     C. have worked                    D. will have worked

I learned that the college was founded in 1900

            A. found                              B. was founded                    C. founded    D. had been founded

If I were 10 years younger, I would take the job.

            A. am/ will take        B. were/ would take C. would be/ took     D. had been / would take

By the time he went to the meeting, it had begun for 15 minutes.

            A. had gone   B. has gone    C. went           D. was going

 38.  He began to feel ill while he was doing the exam.

  A. he is doing the exam                B. he did the exam           

C. he would do the exam         D. he was doing the exam.

Since 1980, scientists the world over have done a lot of things to fight against AIDS.

            A. have done            B. are doing C. did D. had done

Now my sister has a bicycle of her own.

            A. is having   B. are having             C. has D. had

Last week, my professor promised that he would come today.

            A. would come         B. will come C. comes        D. coming

My girl friend arrived after I had been waiting for her about half an hour.