Question

Will was stupefied with exhaustion, and he _____ his head on the grass under one of the trees and slept, but he saw a cat acting strangely. 

A．should have lied

B．ought to have lay

C．might have laid

D．must have laid

Answer 1

C

解析试题分析：句意：Will过度劳累，他本来可能已经将头枕在树下的草地上睡着了，但是他看见一只猫走过来。这里表示对过去的事情的不太肯定的推测，用might have done，should have done是虚拟语气“过去本应该做却没有做”，ought to have done和should have done意思一样，也是“过去本应该做却没有做”，must have done“过去一定做了…”。所以选C。
考点：考查情态动词的完成式