_____ many times, but he still doesn’t know how to operate the machine properly.A．Although I have shown himB．I have shown himC．Having been shownD．Having shown-高中英语-n多题

◎ 题干

_____ many times, but he still doesn’t know how to operate the machine properly.

A．Although I have shown him	B．I have shown him
C．Having been shown	D．Having shown

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“_____ many times, but he still doesn’t know how to operate the machine properly.A．Although I have shown himB．I have shown himC．Having been shownD．Having shown…”主要考查了你对【therebe句型】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“_____ many times, but he still doesn’t know how to operate the machine properly.A．Although I have shown himB．I have shown himC．Having been shownD．Having shown”考查相似的试题有：

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