◎ 题干
— How is Emmy?    
— I have no idea. She hasn't written to me ______ we met last time. 
[     ]
A. since
B. while
C. as
D. before
◎ 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“— How is Emmy?— I have no idea. She hasn't written to me ______ we met last time. [ ]A. since B. while C. as D. before…”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。