My two cents:

Hand one:

Calling is not an option. 3 bet or fold. Personally, I just fold. All the prior folds indicate the deck should now be rich in big cards. It's likely that overs will flop and if you don't hit your set it becomes an expensive guessing game.

OTOH, I can't argue too much with someone who advocates 3 betting here but it's just not for me.

Hand 2:

I fold that hand without thinking about it for a moment. A-Qo in bad position with a good player making it 3 bets and a cold calling button? Ugh! If anybody wants to buy that hand from me they can have it for a dollar.

Hand 3:

KQo looks nice but it's a trouble hand as well. I suppose that an argument could be made for raising but I hardly like to play it at all up front. That doesn't mean I don't but I want a loose game with passive, unobservant players. If the game is full of good players, who know what I'm doing, I won't play it in that spot at all.