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11.-Can you come to see the movie with us this evening?
-I'd like to,but I            do my homework first.(  )
A.mustB.have toC.mustn't

分析 --你今晚能来和我们一起看电影吗?
--我非常愿意,但是我必须首先完成作业.

解答 答案:B.must一定,必须,主观上必须这样;have to不得不,受客观条件的限制;mustn't禁止.根据I'd like to,but I-do my homework first,可知我想去,但首先不得不完成作业,受客观条件完成作业的限制,不得不做这件事.故选B.

点评 本题考查情态动词的用法.解答时注意must一定,必须,主观上必须这样;have to不得不,受客观条件的限制.

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