◎ 题干
I took the wrong train ______, I didn't even know it until half an hour later.
[     ]
A. by mistakes
B. by mistake
C. with mistake
D. with mistakes
◎ 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 took the wrong train ______, I didn't even know it until half an hour later. [ ]A. by mistakes B. by mistake C. with mistakeD. with mistakes …”主要考查了你对  【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。