—HowcanIthankyou?—Don’tmentionit.Anyothermaninthatcase_______thesam

—How can I thank you? —Don’t mention it. Any other man in that case _______ the same thingA.would have doneB.could have doneC.must have doneD.should have done

B解析考查虚拟语气。句意：我该如何感谢你呢？——不要提了。任何其他人在那种情况下都会做相同的事情。“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。故选B。

这个答案应该是对的