When Peter speaks in public, he always has trouble _ the right things to say.
A．thinking of
B．to think of
C．thought of
D．think of .
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“When Peter speaks in public, he always has trouble _ the right things to say.A．thinking ofB．to think ofC．thought ofD．think of .…”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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