You should A. use it to remember a word. This moves it from the short term memory to the long term, where you can recall it when needed
It's is a contraction of “it is” and Its with no apostrophe is the possessive word
For example
It's (it is) going to be a rainy day!
and
I tried to arrange my shoes wrong and i realized that’s not its box.
No because they generally get boring when it is the same actor or actress, I would rather watch many people perform together. Just my opinion
To back up your claims and prove that it is correct information