英语选择题-The air is cool and clean.

问题描述:

英语选择题-The air is cool and clean.
-Yes,It ___ last night.
A was raining B was rainy C rained D has rained
主要是想问一下,为什么不是选A和B而是选C?

A 是过去进行时,表示昨晚正在下雨,不符合逻辑,选项B 用be 动词+形容词构成谓语,应该可以,但很少见,C 选项比较常见,意为昨晚下过雨,符合语境