since this road is wet and slippery this morning,it----last night.a.must rain b.was rainingc.must have rained d.may rain

分类: 作业答案 • 2021-12-20 02:47:27

问题描述：

since this road is wet and slippery this morning,it----last night.
a.must rain
b.was raining
c.must have rained
d.may rain

答