◎ 题干
— It is strange that Dave didn't respond________any of my emails.
— Something must have happened to him.
[     ]
A. on        
B. with
C. for  
D. to
◎ 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“— It is strange that Dave didn't respond________any of my emails.— Something must have happened to him.[ ]A. on B. withC. forD. to…”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。