Hand 1
I think his flop check/call is a slowplay and as there are not many feasible draws on that flop. So it looks like the villain hit this flop hard and then his lead on the turn looks a lot like a set. I would have folded the turn.

Hand 2
You are getting nearly 5 - 1 on the river to call and he does not seem to be betting like he has a flush. I would call.

Hand 3
As he is a passive player, I think he would call with hands that you beat, so I guess he has 2 pair+ and would fold.