River play no. 1

[skp]

I had three interesting river decisions last night. I'll post the three hands in separate threads.

The first hand also has a "what do I do on the turn" component.

I open raise from 2 off the button with Ad3d. Only the bb (a pretty good player) calls.

Flop: Kd7d6h

He bets. I raise.

Turn: As

He bets again.

What should I do?

River: Ah

If you just called the turn, what should you do if bb bets the river?

If you raised the turn, what should you do if bb checks the river?