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    ---Who it be that is knocking at the door? ---It be Father, but I'm not sure. A. can, must B. must, can C. can, may D. may, must 【查看更多】

     

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    ——Who       it be that is knocking at the door?
    ——It       be Father, but I’m not sure.

    A．can; mustB．can; mayC．must; canD．may; must

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    —Who______ it be that is knocking at the door?
    —It ______ be Father, but I’m not sure.

    A．can; mustB．can; mayC．must; can D．may; must

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    ——Who       it be that is knocking at the door?

    ——It       be Father, but I’m not sure.

    A．can; must         B．can; may          C．must; can         D．may; must

     

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    —Who______ it be that is knocking at the door?

    —It ______ be Father, but I’m not sure.

    A．can; must         B．can; may          C．must; can          D．may; must

     

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    —Who______ it be that is knocking at the door?  

    —It ______ be Father, but I’m not sure.

    A. can; must                    B. can; may          C. must; can                      D. may; must

     

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