Whose ball is this?
It's Ann's ball.
Whose cicycle is this?
It is Jill's bicycle.
Whose school bag is this?
It is Ann's school bag.
Whose ruler is this?
It is Jill's ruler.
Whose pencil is this?
It is Sam's pencil.
Whose eraser is this?
It is Ann's eraser.
Whose book is this?
It is Tom's book.
Whose kite is this?
It's Tom's kite.
Whose car is this?
This is Sam's car.
Whose teddy bear is this?
It's Jill's teddy bear.
Whose pool is this?
It is Sam's pool.
Whose pen is this?
It is Tom's pen.