Clean ....
Clean up.
Sit ....
Sit down.
Please ... quiet.
Please be quiet.
Stand ....
Stand up.
May I ... to the bathroom?
May I go to the bathroom?
Raise your ....
Raise your hand.
Do ... homework.
Do your homework.
Close the ...
Close the door
Line ....
Line up.
Listen ... the teacher.
Listen to the teacher.