Now 70 years old, the British physicist, Pendry can’t remember a time when he w

题型：不详难度：来源：

Now 70 years old, the British physicist, Pendry can’t remember a time when he was not asking a question as a kid, joking that he ________ his parents to death.

A．should torment(折磨)	B．must torment
C．must have tormented	D．should have tormented

答案

C

解析

试题分析：考查情态动词与虚拟语气。句意：现在，70岁的英国物理学家Pendry记得儿时，总是被问同样的一个问题，开玩笑说他一定是折磨死了他的父母。根据joking可知，事情不是真实的，用虚拟语气。must have done一定已经做了某事；should have done sth本应该做某事。故选C。