The streets are wet,it must __________last night.

The streets are wet,it must __________last night. The streets are all wet.It must be raining during the night. the streets are all wet.It_____during the night. It and the streets were still wet It and the streets were still wet.(rain) It __ and the streets were still wet. The ground is really wet,it must-------last night.为什么填have r It must have rained last night,__ the ground is wet . 英语翻译It must have rained last night ,for the road is wet this The ground is so wet,It must have rained last night I think it must be rainy last night.You see,the g___ is wet. it ______last night,for the ground id wet.这里为什么要用must have r