He is very strong. He _____ lift the heavy box. [ ]A. canB. needC. mustD. h

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He is very strong. He _____ lift the heavy box. [ ]
A. can
B. need
C. must
D. have to

答案

举一反三

—What ______ we do then?
—Let’s go out for a walk.[ ]
A. do
B. must
C. shall
D. did

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“Can you sing the song in English?”
“No , I _________”[ ]
A. may not
B. mustn’t
C. needn’t
D. can’t

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—Must I finish that work today?
—No, you _____. You may finish it in three days.[     ]
A. mustn’t
B. needn’t
C. shouldn’t
D. couldn’t

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Must I take the medicine every day?
-No, you __________.[ ]
A. must
B. mustn"t
C. needn"t
D. can"t

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My mother is ill. I __________ stay at home to take care of her.[ ]
A. can
B. may
C. should
D. maybe

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