题目内容
It was obvious that the small grocery was _________ people he owed money to.
A. at the risk of B. thanks to
C. at the expense of D. at the mercy of
D

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题目内容
It was obvious that the small grocery was _________ people he owed money to.
A. at the risk of B. thanks to
C. at the expense of D. at the mercy of
D