35. _______ she couldn’t understand was _______ fewer and fewer students showed interest in her class.

　 A. That; what　　 B. What; why　　　　 C. What; because　 D. Why; that

34. --Is it my age _______the boss minds?

　 --I’m afraid not. He will consider _______ necessary to have an experienced assistant.

　 A. which; it　　　 B. that; it　　　　　　 C. which; that　　　 D. that; that　

33. _______ I know the money is safe, I shall not worry about it.

A. Even if　　　　 B. Unless　　　　　　 C. As long as　　　 D. While

32. My son is very shy, but can you imagine _______ at the English party?

A. him sing　　　 B. his singing　　　　 C. him to sing　　 D. his to sing　　　

31. The line is busy; someone __________ the telephone.

A. can be using　 B. may have used　 　　C. must be using 　D. might have been using

30. The winner of the Grand Slams said that he had owed his success to many people, his parents________.

A. after all　　　　 B. by chance　　　　 C. on purpose　　　 D. in particular

29. As is known to us all, failure usually _______ laziness while working hard can _______ success. A. results from; lie in　　　　　　　　　 B. results in; result from C. leads to; lie in　　　　　　　　　　　 D. results from; result in