Is it a backpack?
No, it isn't.
Is he a boy?
Yes, he is.
Is it a pencil?
Yes, it is.
Is it a cat?
No, it isn't.
Are they kids?
No, they aren't.
Are they books?
Yes, they are.
Is she Hermione?
Yes, she is.
Is it a ruler?
Yes, it is.
Are they friends?
Yes, they are.
Is she a good girl?
No, she isn't.
Are they toys?
Yes, they are.
Is she a teacher?
Yes, she is.