问题 填空题
根据所给基数词,写出相应的序数词。
1. two  ________
2. three   ________
3. four    ________
4. five  ________
5. eight   ________
6. nine           ________
7. twelve     ________                    
8. fifteen      ________
9. twenty     ________
10. thirty-one  ________
答案

1. second 2. third 3. fourth 4. fifth 5. eighth 

6. ninth 7. twelfth 8. fifteenth 9. twentieth 10. thirty-first

名词解释
单项选择题