John fell asleep he was listening to the CD． A．after B．while C．before D．——青夏教育精英家教网——

题目内容

John fell asleep ________ he was listening to the CD．

A．after B．while C．before D．if

试题答案

1、B

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John fell asleep ________ he was listening to the CD．

A．after B．while C．before D．if

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