40. The clever boy made a hole in the wall, _____ he could see what was going on inside the house.

A. in which　　 B. though which　　 C. at which　　 D. on which

39. Have the police found the knife with ___ he killed his wife?

A. that　　　　 B. as　　　　 C. which　　 D. whom

38. Please pass me the dictionary ____ cover is made of thick plastics.(塑料)

A. whose　　　 B. of whom　　 C. who　　　 D. which

37. I’ll tell you ____ he told me last month.

A. all which　　 B. all what　　 C. that all　　 D. all

36. He has the same experience ____ Captain Cook, the wisest detective in our district.

A. with　　　 B. that　　　 C. as　　　　 D. whom

35. Would you like a cup of coffee ______shall we get down to business right away?

A. and　　　　 B. then　　　 C. or　　　 D. but

34. ____the sports meet will be held depends on the weather.

A. Whenever　 B. If　　 C. Whether　 D. That

33. This is the reason ____ he didn’t go to school this morning.

A. why　　 B. that　 C. which　　 D. because

32. This is the best reason ____ they could give at the meeting.

A. why　　 　B. that　　 C. which　　 D. because

31. He is one of the students who ____ the accident.

A. knows 　　B. know 　C. had known 　 D. known