语法同步练习
写出下列单词的复数形式。
1. child ___________
2. foot ___________
3. pencil ___________
4. deer ___________
5. sheep ___________
6. ruler ___________
7. Chinese ___________
8. Japanese ___________
9. mouse ___________
10. man ___________
11. woman ___________
12.