题目内容
The small grocer was at the ______ of the people he owed money to.
A.expenseB.costC.mercyD.sight
C
解析:
at the mercy of“任凭……摆布,受……支配”;at the expense of“有……负担,以……为牺牲”;at the cost of “以……为代价”;at the sight of“一看到……就……”。
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