Her uncle′s health has greatly improved______ he stopped smoking.A.before ...

作者: tihaiku 人气: - 评论: 0

问题 Her uncle′s health has greatly improved______ he stopped smoking.

选项 A.before B.since C.when D.while

答案 B

解析考查连词辨析。before“在……之前”，since“自从”，when“当……时”，while“当……的时候；虽然；然而”。根据句意“自从戒烟以来，她叔叔的健康已经有了很大的改善”可知，只有since符合题意。故选B。

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Her uncle′s health has greatly improved______ he stopped smoking.A.before ...

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