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–Sometimeisknockingatthedoor.Who

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問題詳情:

–Sometimeisknockingatthedoor.Who

–Sometime is knocking at the door. Who ______ it be?

        --It ______ be Tom. He is still in the school.

         A. can; can’t      B. can; mustn’t     C. might; could    D. might; may

【回答】

A

知識點:情態動詞

題型:選擇題

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