Viết những từ sau thành số nhiều :
1. baby - .................
2. boy - ..................
3. knife - .................
4. glass - ...................
5. person - ...................
6. policeman - .......................
7. child - ..........................
8. mouse - ........................
9. foot - ..................
10. potato - ......................
1. babies
2. boys
3. knives
4. glasses
5. people
6. policemen
7, children
8. mice
9. feet
10. potatoes
1. babies
2. boys
3. knives
4. glasses
5. people
6. policemen
7, children
8. mice
9. feet
10. potatoes