—What"s wrong with you? You looked tired.—Last night I _____ sleep well.[ ]A

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—What"s wrong with you? You looked tired.
—Last night I _____ sleep well.[     ]
A.couldn"t
B.wouldn"t
C.mustn"t
D.needn"t

答案

举一反三

You_______ buy the TV guide for next week. I have already bought a copy. [ ]
A. mustn"t
B. needn"t to
C. don’t have to
D. can’t

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My sister is ill, and she stay in bed for several days. [ ]

A. need
B. must
C. has to
D. has to be

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You look too tired. You          rest and         work too much.      [     ]
A. should; should
B. shouldn"t; shouldn"t
C. shouldn"t; should
D. should; shouldn"t

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You _____ be careful next time. It is very dangerous to stay alone in the forest.[ ]
A. must
B. can
C. would
D. shall

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The last train is left, so I _____ stay here until tomorrow.[ ]
A. must
B. have to
C. stop
D. live

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