◎ 题干
— When did you go to bed last night?
— Very late. I didn't go to bed _____ my father came back.

[     ]

A. until
B. since
C. while
D. after
◎ 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“— When did you go to bed last night? — Very late. I didn't go to bed _____ my father came back. [ ]A. until B. since C. while D. after …”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。