Comment Re:But not to give them a chance to correct it fir (Score 1) 404
It's is short for it is or it has. This is a 100% rule. It cannot be used for anything else. If you cannot expand it's to it is or it has, then it is wrong.
Its
Its is like his and her.
Read more at http://www.grammar-monster.com/easily_confused/its_its.htm#ofYKtpWvWVT8w4VO.99