What's this?
It is a door.
What's this?
It is a window.
What's this?
It is a wall.
What's this?
It is a bookcase.
What's this?
It is a floor.
What's this?
It is a chair.
What's this?
It is a clock.
What's this?
It is a board.
What's this?
It is a cupboard.