◎ 题干
I'm sorry I stepped on your shoe; it was an accident.
— It wasn't! You did it ____.
[     ]
A. on purpose
B. by chance
C. by mistake
D. by accident
◎ 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“— I'm sorry I stepped on your shoe; it was an accident. — It wasn't! You did it ____. [ ]A. on purpose B. by chance C. by mistake D. by accident …”主要考查了你对  【介词和介词短语】  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。