◎ 题干
— It's been five years _____ we met last time.    
— Yes. What a long time!

[     ]

A. when
B. until
C. since
D. while
◎ 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“—It's been five years _______ we met last time. —Yes. What a long time! [ ]A. when B. until C. since D. while …”主要考查了你对  【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。