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    ( ) The doctors tried their best to save the patient, failed. A. Because B. so C. or D. but 【查看更多】

     

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    The doctors tried their best to save the patient's life, ________ failed.

    A. or

    B. so

    C. but

    D. because

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    The doctors tried their best to save the patient’s life, ________ failed．

    [　　]

    A．or

    B．so

    C．but

    D．because

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