Ответ:

1) 1. man's hat

2. girl's home

3. boys' homes

4. horses' legs

5. baby's face

6. my brother's friend

7. women's songs

8. birds' wings

2) 1. the boys' houses

2. the girls' friends

3. the dogs' barks

4. the women's songs

5. the children's games

6. the babies' smiles

3) 1. the bird's wing

2. the child's game

3. the baby's smile

4. the boy's house

5. the dog's bark

6. the girl's friend

4) 1. chemist's

2. Smith's

3. children's

4. woman's

5) 1. This life is yours.

2. This watch is his.

3. This money is ours.

4. This plan is hers.

5. This clothes are theirs.