题目内容
5．---May I go out to play now，mum？---No，you________．You must make your bed first．（ ）
| A． | needn't | B． | won't | C． | can't | D． | couldn't |
分析 --妈妈，现在我可以出去玩吗？
--不，你不能．你必须先收拾好你的床．
解答 答案：C．needn't不必；won't将不会；can't不能；couldn't不能，couldn't，表推测时，它并不是过去式，只是在语气上比can't委婉．根据You must make your bed first，可知这里的意思是必须先收拾好你的床，所以不能出去玩，语气比较强烈，can't不能；故选C．
点评 本题考查了情态动词的用法．熟知句意以及所给选项的意思是解答本题的关键．
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