◎ 题干
The police asked________ if they had seen the accident happen.
[     ]
A. passerby  
B. passerbys
C. passerbyers  
D. passersby
◎ 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“The police asked________ if they had seen the accident happen.[ ]A. passerbyB. passerbysC. passerbyersD. passersby…”主要考查了你对  【可数名词及其单复数】  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。