What's this?
It's a wall
What's this?
It's a clock
What's this?
It's the floor
What's this?
It's a bookcase
What's this?
It's a cupboard
What's this?
It's a window
What's this?
It's chair
What's this?
It's a board
Who is this?
He is teacher
Who are they?
They are pupils
