题目内容

17.-Mom,can I playcomputer games now?
-No,you       finish your homework first.
A.canB.mayC.must

分析 --妈妈,现在我可以玩电脑游戏吗?
--不,你必须先完成你的作业.

解答 答案:C.can能,会;may可以;must一定,必须.根据No,可知这里现在不能玩游戏,必须先要完成作业.must一定,必须.故选C.

点评 本题考查了情态动词的用法.解答本题的关键是根据否定回答判断出现在不能玩游戏.

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