练习册

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    表示“肯定是, 一定是 的推测意义; 与此对应, 表示“肯定不,一定不 用can’t, 而不用mustn’t a. You must be very tired now. b. If he had really been there, I must have seen him. c. He must have gone away. We don’t see him anywhere. 【查看更多】

     

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