Is this your ball?
Yes, it is.
Is this your pen?
No, it isn't.
Is this your pencil?
Yes, it is
Is this your cat?
No, it isn't.
Is this your ruler?
No, it isn't
Is this your teddy?
No, it isn't
Is this your doll?
Yes, it is.
Is this your rubber?
Yes, it is.
Is this your crayon?
Yes, it is.
Is this your book?
Yes, it is.