1. This is
Mary.This is her bicycle. This is Mary's bicycle.
2. This is Tom. This
is his mother. This is Tom's mother.
3. Look at the
boys.This is their ball. This is the boys' ball.
4. This is John. This
is his house. This is John's house.
5. This is Sue. This
is her sister. This is Sue's sister.
6. Look at the women. This is their car. This
is the women's car.