◎ 题干
John fell asleep _____ he was listening to music.
[     ]
A. after
B. before
C. while
D. as soon as
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“John fell asleep _____ he was listening to music. [ ]A. after B. before C. while D. as soon as …”主要考查了你对  【并列连词】  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。