45. The doctor couldn’t answer the question___ the patient could survive that night.

　 A. if　　　 B. that　　　 C. whether　 D. what

44.---Have you found your book yet?

　 ---No, I’m not sure___ I could have left it.

　 A. whether　 B. where　　 C. when　　 D. why

43.___ we are doing has never been done before.

　 A. That　 B. What　　　 C. Which　　 D. Whether

42.___ she was invited to the ball made her very happy.

　 A. What　 B. That　　　 C. When　　 D. Because

41. That is___ I was born and grew up.

　 A. There　 B. in which　 C. where　　 D. the place

40.___ David says sounds right to Helen. That’s why she has made up her mind to leave with him___ happens.

　 A. whatever; whatever　　　　　　　　 B. No matter what; whatever　

C. No matter what; No matter what　　 D. Whatever; however

39. Why don’t you bring___ to his attention that you are too busy to do it?

　 A. that　　 B. what　　 C. that　　 D. it

38. Whether ways will be found to stop pollution or not is just___ worries the public.

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

37. Thinking___ you know___ in fact you don’t is a terrible mistake.

　 A. that; that　 B. what; what　 C. that; what　 D. what that

36. In some countries,___ are called “public schools” are not owned by the state.

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