51. They always give the vacant seats to ________ comes first.

　　A) whoever

　　B) whomever

　　C) who

　　D) whom(A)

　　52. In Africa, educational costs are very low for those who are ________ enough to get into universities.

　　A) ambitious

　　B) fortunate

　　C) aggressive

　　D) substantial(B)

　　53. Professor Wang, ________ for his informative lectures, was warmly received by his students.

　　A) knowing

　　B) known

　　C) to be known

　　D) having known(B)

　　54. Our manager is ________ an important customer now and he will be back this afternoon.

　　A) calling on

　　B) calling in

　　C) calling up

　　D) calling for(A)

　　55. A fire engine must have priority as it usually has to deal with some kind of ________.

　　A) precaution

　　B) crisis

　　C) emergency

　　D) urgency(C)

　　56. He said that the driver must have had an accident; otherwise he ________ by then.

　　A) would have arrived

　　B) must have arrived

　　C) should arrive

　　D) would arrive(A)

　　57. The film provides a deep ________ into a wide range of human qualifies and feelings.

　　A) insight

　　B) imagination

　　C) fancy

　　D) outlook(A)

　　58. It is high time that such practices ________.

　　A) are ended

　　B) be ended

　　C) were ended

　　D) must be ended(C)

　　59. Urban crowdedness would be greatly relieved if only the ________ charged on public transport were more reasonable.

　　A) fees

　　B) fares

　　C) payments

　　D) costs(B)

　　60. The doctor had almost lost hope at one point, but the patient finally ________.

　　A) pulled out

　　B) pulled through

　　C) pulled up

　　D) pulled over(B)

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