用所给单词的适当形式填空。
1. You are in poor health and you must give up _____. (smoke)
2. You should do more _____ (exercise). Don't always sit at the desk busy doing your _____. (exercise)
3. We all love Miss Yang. She always makes her history class very_____. (interest)
4. Foreign stamps _____ him. (interest)
5. Her parents wouldn't allow her to marry anyone _____ family was poor.(who)
6. When their car becomes old, they prefer_____ (buy) a new one rather than _____ (repair) it.
7. I prefer _____ (do) exercise to _____ (watch) TV.
8. His mother refused _____ (buy) him a present.
9. He is sure to come. I've_____ (persuade) him to attend our meeting.
10. I tried to persuade him _____ (give) up _____ (smoke), but failed.
