- - How dangerous it was!- - Yes, but for the passer - by' s quick action, the girl A. was

网友回答

A. was drowned
(答案→)B. could have been drowned
C. had drowned
D. should be drowned
解析：考查虚拟语气的运用。句意：--多危险啊。---是，要不是那个过路者动作快，这个女孩就死了。But for要不是，是虚拟语气句型。相当于If it had not been for the passer - by' s quick action，所以主句用could/would/should have done，因为the girl和drown是被动关系，选B。