Решение:
- Nick's horse is in the yard.
- children's kittens are in a box.
- boys' skis are under the bench.
- Ann's cat on the chair?
- Bobby's dog?
- students' shirts are white.
- girls' chicks?
- Tom's sledge in the garden?
- Mother's room.
Ответ: Nick's, children's, boys', Ann's, Bobby's, students', girls', Tom's, Mother's.