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    Jane, please turn off the lights you leave the classroom. A. after B. before C. until D. but 【查看更多】

     

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    Jane, please turn off the lights         you leave the classroom.   
    [     ]

    A. after                            
    B. before    
    C. until                            
    D. but

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    Jane, please turn off the lights ______ you leave the classroom.

    A．after              B．before                    C．until                   D．but

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    Jane, please turn off the lights ________ you leave the classroom．

    [　　]
    A．

    after

    B．

    before

    C．

    until

    D．

    but

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