1.    The boy has a toy. → It’s the boy’s toy.
2.    Peter has a book. → It's Peter’s book.
3.    The magazine has my picture on its cover. → My picture is on the magazine’s cover.
4.    Our friends live in this house. →  It's our friend’s house.
5.    There is milk in the glass. →   It’s milk in the glass
6.    This house has a number. → What is the house’s number?
7.    The walk lasts two hours. → It's the two-hour walk.
8.    John has a sister, Jane. → Jane is John’s sister.
9.    This school is for girls only. →  "Scream" is the film’s name.
10. The film has a name, "Scream". → It's a girl-only school.