Does Ben have a camera? Yes, this is his book. It's his.
Do you have a guitar? Yes, this's my guitar. It's my.
Do we have a car? Yes, that's our car. It's ours.
Does he have a parrot? Yes, that's his parrot. It's his.
Does Sue have a balloon? Yes,that's her balloon. It's hers.
Do you have a bike? Yes,that is my bike. It's my.
Does Costas have a radio? Yes, that's his radio. It's his.
Do they have a computer? Yes, that's their radio. It's theirs.