51.　　 ______production up by 60%, the company has had another excellent year.

A. As　　　 B. For　　　　 C. With　　　　 D. Through

50.　　 To have the wonderful cloth ______ new clothes, they had the machine _____all day long.

A. made into; run　 B. made into; running　 C. made of; work　 D. made of; working

49.　　 He has to make himself ______that he is not a thief.

A. believe　　 B. to believe　　 C. believed　　 D. to be believed

48.　　 The woman was heard ______.　　 A. cry　　 B. cried　　 C. to cry　　 D. cries

47.　　 Seeing the sun ______ above the surface of the sea, we were very glad.

A. raising　　　 B. rising　　　 C. to raise　　　 D. to rise

46.　　 The ______ boy was last seen ______ near the East Lake.

A. missing; playing　 B. missing; play　 C. missed; played　 D. missed; to play

45.　　 My uncle ______ until he was forty-five.

A. married　　 B. didn’t marry　　 C. wasn’t marrying　　 D. would marry

44.　　 This happened ______ last summer.

　 A. some times　　 B. some time　　 C. sometime　　 D. sometimes

43.　　 My father is going to stay in Beijing for ______.

42.　　 It will be ______ before she gets well.