Playing medium pairs with flopped overcards

[sparky3474]

Standard situation question, you are in MP with 77, you limp in with a few others, lets say there are 5 or 6 small bets in the pot. The flop comes with 2 non suited face overcards and a small card, what do you do in these three situations:
1. its checked to you
2. sb checks, bb bets, utg calls
3. it's checked around and the CO bets

Thanks in advance guys