______ over and over again, but he still couldn’t understand.A．Having explainedB．Having been explainedC．ExplainingD．It had been explained-高中英语-n多题

◎ 题干

______ over and over again, but he still couldn’t understand.

A．Having explained	B．Having been explained
C．Explaining	D．It had been explained

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“______ over and over again, but he still couldn’t understand.A．Having explainedB．Having been explainedC．ExplainingD．It had been explained…”主要考查了你对【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

◎ 相似题

与“______ over and over again, but he still couldn’t understand.A．Having explainedB．Having been explainedC．ExplainingD．It had been explained”考查相似的试题有：

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