问题补充：
— How could I thank you enough?
—Don’t mention it. Any other man that.
A. must do
B. could do
C. would have done
D. should have done
答案：
A. must do
B. could do
(答案→)C. would have done
D. should have done
解析：通过“任何一个人都会这样做的。”可知是对“过去情况”的“猜测”，所以答案C。
