【题目】―It was a red light, William. You ________ the car.
― Sorry. I didn’t see it.
A. should have stopped B. couldn’t have stopped
C. must have stopped D. needn’t have stopped
在线课程【答案】A
【解析】
考查虚拟语气。句意：——威廉，红灯亮了。你应该停车。——对不起，我没看见。“must+have+done”表示对过去事情的肯定推测，译成“一定做过某事”； “should+have+done”意思是“本来应该做某事，而实际没做。故选A。