根据句意和首字母提示补全单词。

1. When English people meet each other, they always like talking about w______ first.

2. I'm in Zhengzhou now. it's very cold in w_______.

3. Look! The whole world is white. It's s_______ heavily.

4. The leaves are falling off the trees to the g_______, because it is fall now.

5. Summer is my favorite s_______. I can swim in the river.