根据首字母补全单词。

1. I was born in a small v______. 

2. The air was f______ with laughter. 

3. Autumn was the h______ season. 

4. If it snowed, we would rush out to make s______ 

5. My childhood is u______, I will never forget it. 

6. In winter, we stay i______ most of the time. 

7. We often swim and have water f______ in the river. 

8. Chinese are p______ of the Great Wall. 

9. Lily is b______ with her work. 

10. She does her b______  to study English, because it's very important.