The ground is wet all over so I’m sure it must have rained last night ?A. wasn’t itB. di

问题补充：

The ground is wet all over, so I’m sure it must have rained last night, ?

A. wasn’t it

B. didn’t it

C. isn’t it

D. doesn’t it

答案：

A. wasn’t it

(答案→)B. didn’t it

C. isn’t it

D. doesn’t it

解析：下面反义疑问句的主语it指的是昨晚的下雨的情况，因此选B，意思是昨晚下雨了吗？