it's raining or it's rainy or it's rain 哪个对?

问题描述:

it's raining or it's rainy or it's rain 哪个对?

it's raining

it's raining
it's rainy
都可以

都对.
it\'s raining 外面在下雨.
it\'s rainy这是很多雨的.
it\'s rain这是雨