根据句意和首字母或汉语提示完成单词。
1. — How often does Mary exercise?
— She exercises t________ a week.
2. — Could I b_______ your bike?
— Yes. Here's the key.(钥匙)
3. It often rains in s________ China in summer.
4. Here are two _________(薄片) of bread.
5. Her writing __________(习惯) are very good.
6. I was really busy. I spent the w________ morning doing my homework.
7.We must read ____________(说明) before taking medicine.
8. He won first prize in the singing c_________.
9. Her favorite subjects are c____________ and physics.
10. My cousin b_________ a teacher in 2008.
