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