We never know we will succeed we actually try.A. until B. when C. unless D. though 题目和参考答案——青夏教育精英家教网—

题目内容

We never know we will succeed ________ we actually try.

A. until B. when C. unless D. though

【解析】

试题分析：句意：直到我们真正的尝试才知道是否会成功。never…until“知道……时候才”。 B. when“当……时候”；C. unless“除非”；D. though“尽管”，故选A。

考点：考查连词的辨析。

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用方框内所给单词的适当形式填空（5分）

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