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    The oil must have been used up, the light went out. A. for B. because C. since D. as 【查看更多】

     

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    The oil must have been used up, _____ the light went out.

        A. for     B. because   C. since  D. as

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    The oil must have been used up, ________ the light went out．

    [　　]

    A．for

    B．because

    C．since

    D．as

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