How___(hard) it was snowing yesterday

How___(hard) it was snowing yesterday It was snowing hard,hard是形容词为什么可以修饰snowing这个动词? It was _____(snow)yesterday 填snowing还是snowy?原因. It is snowing very hard. and it was snowing outside. It was snowing hard,and -- ,many of the students were late f It was snowing very hard for days.Nicholas's two dogs,Sa as it was snowing hard outside,we were sitting _to the stove it is snowing now.it什么yesterday It is snowing very hard .同义句 when it's snowing so hard 1、As it was snowing hard,my car ——————（break) down.2、____ it