题目内容
4.-Can I go to the movie,Mum?-Certainly.But you _______ be back by ten o'clock.( )
| A. | can | B. | may | C. | might | D. | must |
分析 --妈妈,我可以去看电影吗?
--当然可以.但是你十点之前必须回来.
解答 答案:D.can可能;may可以;might可以(may的过去式,语气比may要轻);must必须.根据But you _______ be back by ten o'clock,可知这是母亲对于子女的要求,所以用must.故选D.
点评 本题考查了情态动词的用法.解答时注意区分辨别句意以及所给选项的意思.
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