Question

We ______ the difficulty together, but why didn’t you tell me?

A．should face

B．might face

C．could have faced

D．must have faced

Answer 1

C

考察虚拟语气。根据but后面的过去时可知是与过去事实相反，那么主句中应该使用情态动词+have done的形式。故排除AB。D项只表示对过去情况的肯定推测，不表示虚拟，故C正确。