39. -Is it for two months ______ they have stayed here?

-No,it is only three weeks ______they arrived here.

A.that;since　　　　　　　　　 B.that;when　　　　　　　　　 C.when;that　　　　　　　　　 D.since;before

38. I would appreciate it ______ you call back this afternoon for the doctor’s appointment.

A.until　　　　　　　　　　　　 B.if　　　　　　　　　　　　　　　 C.when　　　　　　　　　　　　 D.that

37. Just because they make more money than I do, _________ they seem to look down on me.

A. so　　　 B. and　　 C. but　　 D. 不填

36. The point is not who said the words, _________ they are true or not.

A. but whether　　　 B. and whether　　　 C. but how　　 D. and how

35. I’m sorry, _________ I won’t be able to come tonight.

A. for　　 B. and　　 C. but　　 D. then

34. The visitor asked to have his picture taken _________ stood the famous tower.

A. that　　 B. at which　 C. when　 D. where　

33. After the war, a new school building was put up _________ there had once been a theatre.

A. that　　 B. when C. which D. where

32. “May I go and play with Dick this afternoon, Mum?” “No, you can’t go out _________ your work is being done.”

A. before B. until　 C. as　　　 D. the moment

31. I’m stuck on this problem; you may ask ______ knows better than I.

A. whoever　　　 B. whomever　　　 C. anyone　 D. the one

30. One of the good things about the use of noise-killing system is ______ it saves the need for a silencer.

A. whether　　　 B. that　　　　　　 C. how　　　　 D. why