1. sister's

2.girl's

3.children's

4.Chris

5.men's

6.Tess

7.Crosbys

8.people's

Ответ:

1. sisters';  2.girls'; 3. childrens'; 4. Chris"s; 5. mens' 6. Tess's; 7. Crosby's; 8. people's

Объяснение: