29. He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .A．stoppingB．to stopC．to have stoppedD．having stopped-高中英语-魔方格

◎ 题干

29. He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .

A．stopping

B．to stop

C．to have stopped

D．having stopped

◎ 答案

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◎ 解析

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◎ 知识点

根据魔方格专家分析，试题“29. He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .A．stoppingB．to stopC．to have stoppedD．having stopped…”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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