Is this your eraser?
Yes, it is.
Is this your ruler?
Yes, it is.
Is this your pencil?
Yes, it is.
Is this your notebook?
Yes, it is.
Is this your pencil case?
Yes, it is.
Is this your pencil case?
No, it isn't.
Is this your notebook?
No, it isn't.
Is this your pencil?
No, it isn't.
Are these your pencils?
Yes, they are.
Are these your erasers?
Yes, they are.
Are these your pencil cases?
No, they aren't.
Are these your notebooks?
No, they aren't.
