Since the road is wet this morning,---------last night.A it must rain B it must have rainde C it must be raining D it must have been raining
问题描述：
Since the road is wet this morning,---------last night.
A it must rain B it must have rainde C it must be raining D it must have been raining
答
B 今天早上的路是湿的，昨晚一定下过雨了。
答
B
答
B
过去完成时
昨晚一定下过雨了
A是一定要\会下雨
C是进行时态,排除
D是过去完成进行时,也排除
答
A
鉴于路面今早是湿的，昨晚一定下雨了