自考《英语（一）》试题练习：词组的固定搭配（7.7）
单选题
[2008.10]When the engine broke down，the boat's crew found themselves ______ of the wind.
A.at the cost
B.at the mercy
C.at the rate
D.at the moment
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单选题
[2008.10]When the engine broke down，the boat's crew found themselves ______ of the wind.
A.at the cost
B.at the mercy
C.at the rate
D.at the moment
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