What is this?
It's a pen.
What is it?
It's a chair.
What are they?
They're pencils
What are they?
They're crayons.
What is this?
It's a backpack.
What is it?
It's a desk.
What are they?
They're rubbers.
What are they?
They're marker pens.
What is it?
It's a book.
What are they?
They're rulers.