I．根据提示写单词
1. On her _________(二十) birthday, she received a lot of presents from her friends.
2. Friday is the __________(第六)day of a week.
3. Simon lives on the __________(第九) floor.
4. About six _________ (千)people were killed in a big earthquake in Indonesia last month.
5. December is the __________ month of a year.
