___ help the people in the snowstorm in the south made him worried．A．Not known how toB．Unknown what to do toC．His knowing not how toD．His not knowing how to-高中英语-n多题

◎ 题干

___ help the people in the snowstorm in the south made him worried．

A．Not known how to	B．Unknown what to do to
C．His knowing not how to	D．His not knowing how to

◎ 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“___ help the people in the snowstorm in the south made him worried．A．Not known how toB．Unknown what to do toC．His knowing not how toD．His not knowing how to…”主要考查了你对【现在分词的被动式】，【现在分词】，【不定式的被动式】，【过去分词】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。

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