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    22．I upset when I failed the exam.A．may be B．used to C．use to be D．used to be 【查看更多】

     

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    I ______ upset when I failed the exam.
    [     ]
    A．may be
    B．used to
    C．use to be
    D．used to be

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    I ______ upset when I failed the exam.

    A．may be          B．used to          C．use to be             D．used to be

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