Question

【题目】He made a serious mistake, but he took action to change that it got worse.

A.beforeB.whenC.becauseD.until

Answer 1

【答案】A

【解析】

句意：他犯了一个严重的错误。但是在事情变得更糟之前，他采取了行动改变了情况。

考查连词。before在……之前；when当……时；because因为；until直到。根据句中信息“He made a serious mistake, but”推测后句句意：在事情变得更糟之前，他采取了行动改变了情况。故选A。