What's that?
That's an old doll.
What's that?
That's a new doll.
What's that?
That's a big ball.
What's that?
That's a new bike.
What's that?
That's an old car.
What are those?
Those are new/small cars.
What are those?
Those are small balls.
What's that?
That's a short pencil.
What's that?
That's an old bike.