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    精英家教网 > 高中英语 > 题目详情
    We had to be patient because it ______ some time ______ we got the full results.
    A．was; sinceB．had been; since
    C．was; beforeD．would be; before
    D

    试题分析：固定句式：It be 一段时间 before…一段时间以后某事才发生；如果before后面使用一般现在时，前面的主语使用将来时；如果before后面使用一般过去时，前面也使用一般过去时；句义：我们不得不耐心等待，因为一段时间以后我们才能得到完全的结果。本句前面都使用了过去的时态。故D正确。
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