Question

（　）Since the road is wet this morning,last night __________.

A.it must be raining
B.it must rain
C.it must have rained
D.it must have been rained

Answer 1

【答案】：C
C【解析】考查“must+have+过去分词”结构。此结构是对过去事情的肯定推测，为主动语态结构，“must+have+been+过去分词”为其被动语态结构。