1. This man — This man is my sister.
2. That men — That man is my brother.
3. These woman — These women are very clever.
4. Those child — Those children is good in Mathematics.
5. man — This man can help you.
6. men — These men can dance well.
7. woman — That woman is my teacher.
8. child — This child usually rides a bike.
9. children — These children play football every day.
10. pupils — Those pupils go to school.
11. boy — This boy knows English well.
12. boys — These boys are my brother.
13. girl — This girl is my sister.
14. girls — Those girls usually rides a bike.
15. pupil — That pupil knows English well.