Hand 1: Fine with a read, if your are playing a more aggressive preflop game still then you might need to start calling these more.

Hand 2: Fine, SB usually shows up with another PP here. TT?

Hand 3: If you are going to call this out of the BB you need to lead this flop, then if he raises you can choose to push. I feel that when big playing draws oop you really need to be the one pushing not calling.