题目内容

20．-Mom，may I go swimming with my friends in the river？
-No，you _________．That's too dangerous．（　　）
A．won'tB．don'tC．needn'tD．mustn't

分析 --妈妈，我可以和我的朋友一起去河里游泳吗？
--不，您不可以．太危险了．

解答 答案：D．
won't将不会；don't不；needn't不必；mustn't禁止，不可以．根据too dangerous，可知太危险，所以不可以去河里游泳．mustn't禁止，不可以．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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