Question

It was dangerous for you to swim in that river. You    eaten by the fish.

A．might have been	B．must have been
C．could have been	D．should have been

Answer 1

C

试题分析：考查情态动词。A也许已经做了；B一定做了；C可能做了；D本应该做实际上却未做；C项与A项是近义词，但是C项的语气更强。句意：在那条河里游泳很危险。你有可能会被鱼吃掉。根据句意说明C正确。
点评：要注意情态动词与have done连用的时候的不同含义。区别是虚拟语气还是表示推测。