(·甘肃河西五市二模)Look! The ground is wet. It must have rained last night ？A. hasn't itB. ha

问题补充：

(·甘肃河西五市二模)Look! The ground is wet. It must have rained last night, ？

A. hasn it

B. hadn it

C. mustn it

D. didn it

答案：

A. hasn it

B. hadn it

C. mustn it

D. didn it

解析：D考查反意疑问句。句意：看！地是湿的。昨晚一定下过雨，是不是？It must have rained last night是推测语气，可改写为I think it rained last night，可见其反意疑问部分应为didn it，故选D项。