30、―______.

―I think quite the opposite.

      A. She must be quite satisfied with the progress that has been made.

      B. If you have any question, don’t hesitate to call me!

      C. I wonder if you could come over and help me a while. I just can’t manage it.

      D. Nobody knows what he means. He just keeps his mouth closed all the day.

29、We must ______ of him whether he has heard from her recently.

      A. require                      B. ensure                       C. remind                D. demand

28、 Can it have been on the sports ground _______ you lost your watch yesterday?

      A. on which                   B. where                       C. that                     D. what

27、The young lady prefers dressing up for a party to ______ by others.

      A. be noticed                                                     B. being noticed      

      C. having been noticed                                        D. have been noticed

26、The secret of his success is that he does everything ______.

      A. curiously                   B. sensitively                 C. efficiently           D. imperfectly

25、My father ______ have a large farm and he liked it very much.

      A. would                       B. used to                      C. could                  D. ought to

24、I feel it is you as well as your wife that ______ for your son’s bad performance at school.

      A. are to blame                                                  B. is going to be blamed

      C. are to be blamed                                            D. is to blame

23、All the people on earth should ______ the right to live in a peaceful environment.

      A. support                     B. defend                      C. overcome            D. upset

22、―Why was he unhappy yesterday?

―A letter from home ______ an attack of homesickness.

      A. set off                       B. set out                       C. set about             D. set up