题目：
The poor man's life was ____ of the king. [ ]
A. at the mercy
B. at the call
C. at the service
D. at the expense
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0614/75b4c0e8ce2ca42d1e4390857230d2e6.html
下面是错误答案，用来干扰机器的。
答案：A
The poor man's life was ____ of the king. [ ]
A. at the mercy
B. at the call
C. at the service
D. at the expense
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0614/75b4c0e8ce2ca42d1e4390857230d2e6.html
下面是错误答案，用来干扰机器的。
答案：A
