◎ 题干
The little boy jumped up and down happily when he saw a bee _____ into the house.

[     ]

A. flown
B. to fly
C. flying
D. has flown
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The little boy jumped up and down happily when he saw a bee _____ into the house. [ ]A. flown B. to fly C. flying D. has flown …”主要考查了你对  【实义动词的现在分词】  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。