1. friend's presents
2. her parents' letters
3. women's bags
4. Tom and Bob's puppy
5. children's holiday
6. boy's cup
7. pupils' pens
8. ladies' dresses
9. my friends's cat
10. that man's son
11. pupils' desks
12. teacher's pen
13. my grandfather's room
14. Polly, Ann, Sam's toys
15. David, Fanny, Greg, Jane's balls
16. Zack, Lin, Nancy's exercise-books.
17. birds' house
18. tigers' cage
19. hens' chickens
20. clowns' tricks
21. frogs' eyes
22. goose's house
1. Jack's cat is black
2. The cat's nose is pink.
3. The dogs' tails are short
4. Ann's dog is clever
5. Kate and Jane's doll is.....
6. The pupils' books are interesting
7. The cats' tails are short
8. The men's hats are new.
9. The birds' songs are beautiful.