It's a doughnut

This is a doughnut.

They're doughnuts.

These are doughnuts.

That is a book.

Those are books.

Hello Szerénke!

Hi Momo!

What are they?

They are books.

What are they?

They are onions.

Are they doughnuts?

No, they aren't.

They are televisions.

Are they burgers?

Yes, they are.

They're burgers.

These are buses.

Are they aeroplanes?

That's right.

They're aeroplanes.