it is _______(snow) outside. So cold now. 应该填snowy还是snowing?为什么?急求解!

问题描述:

it is _______(snow) outside. So cold now. 应该填snowy还是snowing?为什么?急求解!
老师说应该填snowy,但是我们认为应该填snowing,到底谁对啊?

It is snowy outside. So cold now.
外部多雪, 因此现在寒冷. (结合“下雪不冷化雪冷”,正在下就不一定很冷)
多雪才造成了冷