it snows--- --- ---in Hangzhou in winter,doesn't it/Mum isn'

it snows___ ___ ___in Hangzhou in winter,doesn't it/Mum isn't in the classroom,she__ __the library
第一句意思：杭州的冬天有时也会下雪,
第二句意思：妈妈不在教室,她去图书馆了