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81. They have two teams, and ______ have a good chance of winning.

A. all

B. either

C. both

D. each

82. I used to smoke ______, but I gave it up three years ago.

A. severely

B. heavily

C. strongly

D. seriously

83. I ______ my former school teacher when I was shopping yesterday.

A. ran away

B. ran down

C. ran into

D. ran over

84. She’s very pretty, but she’s not ______ clever.

A. at all

B. at least

C. entirely

D. completely

85. No sooner had he entered Harvard ______ his sister entered Yale.

A. since

B. after

C. than

D. before

86. I like black coffee very much. The stronger it is, ______.

A. I like it better

B. the more I like

C. the better I like it

D. I like it more

87. After the mine accident, the government sent a group of experts to _____ the matter.

A. look into

B. look down upon

C. look through

D. look forward to

88. With the help of the foreign experts, the factory produced____ cars in 2001 as the year before.

A. as twice many

B. as many as twice

C. as twice as many

D. twice as many

89. He came to the party, _________ he hadn’t been invited.

A. in case

B. in spite of

C. even

D. although

90. That was the second time I ______ China that year.

A. have visited

B. had visited

C. would visit

D. was visiting