ПОМОГИТЕ С АНГЛ ЯЗЫКОМ ПЖ ПЖ ПЖ ПЖ РЕБЗЯ,ТОЛЬКО НЕ ПИШЕТЕ

Ex.3
3. the teacher's (ед.ч.) book
4. her parents' (мн.ч.) flat
5. the nurse's (ед.ч.) uniform
6. the bears' (мн.ч.) roar
7. my brother's (ед.ч) bike
8. her sisters' (мн.ч.) dresses
9. the teachers' (мн.ч.) room
10. his father's (ед.ч.) coat
11. men's (мн.ч.) shop
12. the policeman's (ед.ч) car
13. the doctor's (ед.ч) hat
14. the tiger's (ед.ч.) paws
15. the grandparents' (мн.ч.) garden
16. the birds' (мн.ч.) songs
17. their children's (мн.ч.) toys
18. the dog's (ед.ч) bone

Ex.4 1. brother's
2. aunt's
3. friend's
4. Harry's
5. cat's
6. teacher's
7. mother's
8. sister's
9. grandfather's
10. girl's
11. mother's
12. uncle's