◎ 题干
Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.
A.whenB.thatC.beforeD.since
◎ 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“Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.A.whenB.thatC.beforeD.since…”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。