90. I sat ______ , for I did not want to frighten my sick sister.

　　 A. still　　　 B. lonely　　　　　 C. sadly　　　　　 D. unhappy

89.-Could I borrow your dictionary?

--Yes. of course you _____.

　　　 A. might　　　 B. will　　　　　　 C. can　　　　　　 D. should

88. The watch, which Mrs. Smith had ______ on the table as she searched her lecture, disappeared.

　　　 A. seen　　　 B. dropped　　　　 C. found　　　　　 D. laid

87. My chest ______ when I make a deep breath, doctor.

　　　 A. harms　 　　B. wounds　　　　　 C. hurts　　　　　 D. injures

86. _____to take this adventure course will certainly learn a lot of useful skills.

　　　 A. Brave enough students　　　　 B. Enough brave students

　　　 C. Students brave enough　　　　 D. Students enough brave

85. If I had ____,I’d　 visit Europe, stopping at all the small interesting places.

　　　 A. a long enough holiday　　　　 B. an enough long holiday

　　　 C. a holiday enough long　　　　 D. a long holiday enough

84.--Mum. I think I’m ______to get back to school.

　　 --Not really, my dear. You'd better stay at home for another day or two.

　　　 A. so well　　 B. so good　　　　 C. well enough　　 　D. good enough

83. I was really anxious about you. You _____ home without a word.

　　　 A. mustn’t leave　　　　　　　　 B. shouldn’t have left

　　　 C. couldn't have left　　　　　　 D. needn't leave

82. Sir, you ___ be sitting in the waiting room. It is for woman and children only.

　　　 A. oughtn’t to B. can't　　　　　 C. won’t　　　　　 D. needn’t

81. There was a lot of fun at yesterday's party. You ___come, but why didn’t you?

　　　 A. must have　 B. should　　　　 C. need have　　　 D. ought to have