55. The pop music fans ____ to music in many ways when listening to a concert.

　 A. respond　　 B. refer　 C. reply　 D. react

54. She still hesitating ____ her son to college.

　 A. to send　　 B. at sending　　 C. in sending　 D. about sending

53. ____ I entered the room he was ____ in his book and didn’t notice me.

　 A. When; devoted　 B. While; absorbed　 C. When; absorbed　 D. While; dovoted

52. The scientist was ____ in thoughts.　 A. deeply　 B. stuck　 C. got　 D. absorbed

51. Facing the ____ situation the sales manager looked ____.　 A. puzzling; puzzled

　 B. puzzling; puzzling　　 C. puzzled; puzzled　　 D. puzzled; puzzling

49. We have to ____ the wheat as soon as possible because a storm is on the way.

　 A. get away　 B. get across　 C. get through　 D. get in

50 They____ all the details of the plan time and again to make sure that the project went

smoothly.　 A. get through　 B. went through　 C. got over　 D. dipped into

48. ---What about the protection?

　 ---Let’s keep the surface ____ dirty by putting a cover over it.

　 A. far from　 B. free from　 C. apart from　 D. away from

47. When we play our vacation, Mother often offers _____ suggestions.

　 A. careful　 B. practical　 C. effective　 D. acceptable.

46. The old lady ____ great pain when her only son was killed in a traffic accident.

　 A. took　 B. suffered　 C. suffered from　 D. stood

45. ____ from heart trouble for years, Mr. White has to take some medicine with him

whenever he goes.　

A. Suffered　 B. suffering　 C. Having suffered　 D. Being suffered