1. (2021·丽水模拟) 用方框中所给词语的适当形式填空。每词限用一次。

invent    get into the habit    unhappy    twenty    ability

1. （1） Li Ming's in dancing was noticed by his PE teacher.
3. （2） There are many famous writers who were born in the century.
5. （3） Zheng Chengyu felt because his parents managed his time.
7. （4） Tony of doing his homework straight after school last year.
9. （5） Bethune invented medical tools to use outside hospitals and his saved many lives.