I didn’t manage to do it _____ you had explained how.A.untilB.unlessC.whenD.before-英语

题目简介

I didn’t manage to do it _____ you had explained how.A.untilB.unlessC.whenD.before-英语

题目详情

I didn’t manage to do it _____ you had explained how.
A.untilB.unlessC.whenD.before
题型:单选题难度:偏易来源:不详

答案

A
not…until…结构。

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