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情态动词练习
1.------"May I go now?"
-------"No, you ________. "
A. mustn\'t B. needn\'t C. mightn\'t D. won\'t
2. You _________ do the exercise if you don\'t want to.
A. may not B. can\'t C. mustn\'t D. needn\'t
3. You _________ pay more attention to your spelling next time.
A. would B. should C. will D. shall
4. The girl _________ out alone at night.
A. dare not go B. dare not to go C. dares not go D. does not 
