问题详情：
用所给词的适当形式填空。
1. He likes music. He wants to be a ________ (music).
2. After he gets up in the morning, he takes a shower and brushes his ________ (tooth).
3. He ________ (exercise)every morning.
4. It’s one of our ________ (rule) to wear school uniforms on school days.
5. ________ (luck), no one was hurt in the fire.
【回答】
1. musician 2. teeth
3. exercises 4. rules 5. Luckily
知识点：构词法
题型：完成句子
