38. His parents wanted to know what he ________at that time.

     A. is doing                        B. was doing   

 C. has done                       D. will do

37. -- ________Will you stay in Shenzhen for your holiday?

    --For about two weeks.

     A. How often                     B. How long

     C. How soon                     D. What time

36. You won't pass your exams ________you work harder.

     A. when        B if              C. unless         D. after

35. The plane ________at three o'clock in the afternoon.    

A. takes off                       B. takes away

    C. takes out                       D. takes down

34. Some famous paintings ________in the hall next week.   

A. will show                      B. were shown

C. is shown                       D. will be shown

33. --Are you going to see the film with us?

   ---No. thanks. I _______ it.

     A. saw                             B. have seen

     C. see                              D. was seeing

32. You ________be tired after working for eight hours without a rest.

     A. can          B. may           C. must          D. need

31. I am sure that he is ________a lie.

     A. saying       B. talking         C. speaking       D. telling

30. The doctor told Mary to eat ________vegetables and  ________meat because she was getting fatter and fatter.

     A. much; little                    B. more; less

     C. many; few                     D. more; fewer

29. I'd like a cup of coffee ________some sugar and milk.

     A. in           B. to            C. of           D. with