The taxi was so slow that we might as well on the bus.A. goB. have goneC. to goD. having

问题补充：

The taxi was so slow that we might as well on the bus.

A. go

B. have gone

C. to go

D. having gone

答案：

A. go

(答案→)B. have gone

C. to go

D. having gone

解析：考查虚拟语气。句意：这辆出租车是如此慢，我们好像上了公交车。可知下文假设的是已经发生的动作。故用完成时态。might+have+done”表示对过去事情的推测，意思是“可能已经”，故选B。