hand1: probably c/c'ing the river, in case he has queens up. No. the flop check is can't normally be a queen. this is bet/call. I think we have the best hand often. also you didn't get c/r'd, you got raised.

hand2: what do you think his pre-flop 3-betting range is? It could be like AT, and he's just being over-aggro. However, it's probably more likely a higher pair. The thing is, if you want to find out, then post-flop should be call, call, call.