You should have watered the tree,_______?A.shouldn't you B.didn't_英语解答

You should have watered the tree,_______?
A.shouldn't you B.didn't you C.don't you D.haven't you
为什么答案是B,请说明原因.急呀,

人气：371 ℃　时间：2019-10-31 20:37:23

解答

是该选B
前面是一个虚拟语气
意思是你本应该给树浇水的吧?意思就是你应该这样做你却没有这样做是过去的动作
所以反问就是didn't you