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    - Will Sam go swimming with us tomorrow? - I think he will go if he free. A. be B. was C. is D. will be 【查看更多】

     

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    －Will Sam go swimming with us tomorrow?

    －I think he will go if he ________ free．

    [　　]

    A．be

    B．was

    C．is

    D．will be

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