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71. Leaves of this tree will ______ red in autumn.

A. get

B. become

C. turn

D. stay

72. I had to do a lot of housework because my mother ______ ill.

A. had

B. took

C. felt

D. fell

73. The company offers good ______ after sale.

A. service

B. serving

C. selling

D. science

74. The cost of this trip is not so _______.

A. expensive

B. high

C. tall

D. heavy

75. To keep ______, he runs around the lake for half an hour every morning.

A. strong

B. fit

C. health

D. healthy

76. I am ______ of money at the moment. Could you lend me some?

A. short

B. need

C. wanting

D. hoped

77. I am sure such information will be ______ to them.

A. great useful

B. of great use

C. uselessness

D. of very useful

78. He doesn’t care much about evening ______.

A. dress

B. suit

C. cloth

D. dressing

79. The job is not well paid, but at least you can ______ experience in it.

A. gain

B. earn

C. learn

D. win

80. I’ve got two or three telephone calls to ______.

A. make

B. do

C. making

D. doing