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英语
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the river is dangerous.you ___ swim in it .A.can't B.mustn't C.couldn't D.needn't
人气:472 ℃ 时间:2019-12-07 07:15:32
解答
选择B,因为mustn't表示的是禁止,河是危险的,所以是禁止,表示命令
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