◎ 题干
—Do you know about the accident which happened in the center of the city?
—Yes. But it was some time           we realized the truth.
A.before B.when
C.sinceD.Until
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ —Do you know about the accident which happened in the center of the city?—Yes. But it was some timewe realized the truth.A.before B.when C.sinceD.Until…”主要考查了你对  【并列连词】【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。