◎ 题干
I was fast asleep _____ suddenly my bed began shaking and I heard a strange sound, like a railway train
passing my window.
[     ]
A. before        
B. when          
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“I was fast asleep _____ suddenly my bed began shaking and I heard a strange sound, like a railway trainpassing my window.[ ]A. before B. whenC. while D. aft…”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。