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    The driver was about to drive to cross the street the red light turned on. A. as B. when C. before D. while 【查看更多】

     

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     The driver was about to drive cross the street _______  the red light turned on.

       A. as                B. when             C. before             D. while

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     The driver was about to drive cross the street _______  the red light turned on.

       A. as                B. when             C. before             D. while

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