yes
You don't write it as an apostrophe; you write it as a contraction. "It's" is a contraction of it is and it has.
No - Because 'aunts' is a 'mass noun' meaning to more than one aunt. Therefore, no apostrophe.
'Neath is a "poetic" reduction of beneath. It should be avoided, but if you must use it, write it with the apostrophe.
We've
She's
we're
The correct way to write it is "Writers' Workshop" with the apostrophe before the s, which indicates that the workshop belongs to multiple writers. "Writers Workshop" without the apostrophe would imply that the workshop is for writers in general, not owned or associated with them.
might ve
The dog chased its tail. Its is the possessive but does not need an apostrophe. It's, with the apostrophe, means it is.
Just copy this: ć
It's written as she'd.
a tick is just a straight apostrophe: '