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    精英家教网 > 高中英语 > 题目详情
    There was a time in Chinese history_____we had to use foreign oil.

    A. when  
    B. that
    C. which  
    D. as
    A
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    科目：高中英语 来源：同步题 题型：单选题

    There was a time in Chinese history________we had to use foreign oil.
    [     ]
    A．when  
    B．that
    C．which  
    D．as

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