- How could I thank you enough? - Don't mention it. Any other manthat.A. would doB. will d

问题补充：

- How could I thank you enough?

- Don mention it. Any other manthat.

A. would do

B. will do

C. would have done

D. must have done

答案：

A. would do

B. will do

(答案→)C. would have done

D. must have done

解析：考查情景交际和时态。句意：--真不知道该怎样感谢你？--不用客气。（如果）换成其他任何一个人，都会那样做的。根据句意可知，是已经发生了的事情，这里是含蓄条件句，对已经发生的事进行虚拟，主句用would have done。故选C。