◎ 题干
It was clear that the small grocery was_____ people he   owed money to.  
[     ]
A. at the expense of              
B. at the risk of    
C. in the way of                    
D. at the mercy of
◎ 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 was clear that the small grocery was_____people he owed money to. [ ]A. at the expense ofB. at the risk ofC. in the way of D. at the mercy of…”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。