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    ---I have looked for my lost pen everywhere, but I just can’t find it. ---I think that you have left it at home. A. should B. must C. can D. need 【查看更多】

     

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    ---I have looked for my lost pen everywhere, but I just can’t find it.

    ---I think that you _______ have left it at home.

    A. should       B. must        C. can        D. need

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