单选题 The reporter compares a husband to a particularly tricky musical instrument, one that a wife must learn to play ______ her advantage.
A. for B. as C. to D. in

【正确答案】 C

【答案解析】选择A和B似乎都说的通，但跟据全句整体语境以及learn to play的暗示，只有答案C是正确选择，因为to one's advantage是个习惯用语，也是一个固定搭配。