This is a very silly question but it is a very necessary and reasonable question.

You know how "it's" is short for "it is" and "I'd" is short for "I would"?
Well, what I need to know is the shortened form of "it has".

(Even tho I was taught this in Elementary School, I forgot it and Grammarly was no help because I had to be a Premium Member)

Thank You So Very Much