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    The rescue team must have searched for the missing visitors two days ago, ? A. mustn’t they B. haven’t they C. didn’t they D. hadn’t they 【查看更多】

     

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    The rescue team must have searched for the missing visitors two days ago, _____?

        A. mustn’t they     B. haven’t they       C. didn’t they     　　 D. hadn’t they

     

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