50. That is _____ .

　　　 A. where lived he there　　　　　　　　 B. where did he live

　　　 C. where he lived　　　　　　　　　　　　 D. that where he lived

49. That’s _____ .

　　　 A. where our differences lie　　　　 B. our differences lie there

　　　 C. where do our differences lie　　 D. that where our differences lie

48. That’s _____ I want to say.

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

47. Things were not _____ they seemed to be.

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

46. _____ is troubling me is _____ I don’t understand _____ he said

　　　 A. What; that; what　　　　　　　　　　　　　　 B. What; what; what

　　　 C. That; that; what　　　　　　　　　　　 D. Why; that; which

45. That’s _____ we should do.

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

44. That is _____ we all support his idea.

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

43. Has it been announced _____?

A. when are the planes to take off　　　　　 B. that are the planes to take off

C. where are the planes to take off　　　　　 D. when the planes are to take off

42. __ we need more equipment is quite obvious.

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

41. _____ fails to see this will make a big mistake.

A. That 　　　　　　　　　 B. Whoever　　　　　　　　　 C. Whether　　　　 D. Whether or not