______,theycouldn’tsol

发布时间:2020-07-25 18:38:22

______, they couldn’t solve the mystery.A.Tried hard as theyB.Hard as they triedC.Tried as they hardD.They tried hard as

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B解析考查as引导的让步状语从句的倒装。as引导让步状语从句要提前表语、状语或动词原形,此处有状语,先提前状语成分,其结构:形容词/名词/副词/动词原形+as+主语+其他-----。
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