______the doors were closed and that all the lights were off, the boy left the classroom.A.CheckB.To

题目简介

______the doors were closed and that all the lights were off, the boy left the classroom.A.CheckB.To

题目详情


______the doors were closed and that all the lights were off, the boy left the classroom.
A.CheckB.To checkC.CheckedD.Having checked
题型:单选题难度:偏易来源:不详

答案

D
考查非谓语动词。the boy和check是主谓关系,故用主动;check和leave有先后关系,应该用完成时。故选D。

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