NL 25: Pocketpair auf dry, A-high board

[M.P.Rator]

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: ITH Forums)

Hero ($25)
SB ($24.40)
BB ($22.30)
UTG ($29.10)
MP ($14.15)

Preflop: Hero is Button with :7h, :7c.
UTG raises to $0.75, 1 fold, Hero calls $0.75, 2 folds.

Flop: ($1.85) :as, :2h, :4c (2 players)
UTG checks, Hero checks.

Turn: ($1.85) :6h (2 players)
UTG bets $0.75, Hero calls $0.75.

River: ($3.35) :ah (2 players)
UTG checks, Hero checks.

Final Pot: $3.35

villain: 26/17/1.5
bin nicht zufrieden mit dieser hand. soll ich hier den flop betten? oder den turn raisen? oder aber den river?