◎ 题干
— What happened?
— Thousands of people _____ from their homes because of the earthquake.
[     ]
A. flee              
B. fled
C. have fled          
D. had fled
◎ 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“— What happened?— Thousands of people_____ from their homes because of the earthquake.[ ]A. fleeB. fledC. have fledD. had fled…”主要考查了你对  【实义动词的过去式】  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。