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

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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
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

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
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

A
鉴于路面今早是湿的,昨晚一定下雨了

B

B 今天早上的路是湿的,昨晚一定下过雨了。