[Josh.]

hand 1: i would bet the turn. the board is dry, he's passive and unlikely to bluff if you check, or bluff-raise you if you bet. there are also no 2 pair hands he can have. so i'd bet flop, bet turn, check-fold river. checking can be ok if you think he'll fold 98 or 77 now but call the river if the turn goes check-check. but typically i'd bet on this board vs someone straightforward.

hand 2: pretty standard but you can check sometimes too

hand 3: nh