_____ scores of times , but he still couldn’t understand it .A.Having explainedB.Having been explain

题目简介

_____ scores of times , but he still couldn’t understand it .A.Having explainedB.Having been explain

题目详情


_____ scores of times , but he still couldn’t understand it .
A.Having explainedB.Having been explained
C.Though it was explainedD.It was explained
题型:单选题难度:偏易来源:不详

答案

D

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