__________ the experiment right, I tried again and succeeded.A.Not having doneB.Having not doneC.Not

题目简介

__________ the experiment right, I tried again and succeeded.A.Not having doneB.Having not doneC.Not

题目详情

__________ the experiment right, I tried again and succeeded.
A.Not having doneB.Having not doneC.Not doingD.Not done
题型:单选题难度:中档来源:不详

答案

A
考查非谓语动词用法。I与do构成主动关系,根据句意可知没有做到对实验是在我再次尝试之前就发生的,所以使用完成式。句意:因为没有做好实验,我再试了一次,成功了。

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