You are You're You aren't Are you?
He is He's He isn't Is he?
She is She's She isn't Is she?
It is It's It isn't Is it?
We are We're We aren't Are we?
You are You're You aren't Are you?
They are They're They aren't Are they?
Exercise:
http://www.englishexercises.org/makeagame/viewgame.asp?id=2408
