What's this?
Open the door!
What's this?
Clean the board!
What's this?
Stand on the floor! / Don't stand on the chair!
What's this?
Brush your hair!
What's this?
Close your book!
What's this?
Stand up!
What's this?
Open your book!
What's this?
Clap your hands!
What's this?
Write your name!
What's this?
Be quiet!
What's this?
Sit down!
What's this?
Count to ten!
What's this?
Turn around!
What's this?
Close the door!
What's this?
Hand in your homework!
What's this?
Raise your hand!