[Closed] [NL50 FR Rush] 9Ts turns straight on paired board.

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.25/$0.5 No-Limit Hold'em (9 handed)

Known players:
[tg]UTG2$68.25:///////;MP1$57.90:///////;MP2$19.65:///////;MP3$50.25:///////;CO (Hero)$91.75:///////;BU$49.50:///////;SB$50.65:///////;BB$41.70:///////;UTG1$50.05:///////;[/tg]

Preflop: Hero is CO with 9:h, T:h.
4 folds, MP3 raises to $1.50, Hero calls $1.50, BU calls $1.50, 2 folds, BB folds.

Flop: ($5.25) 8:h, 8:c, 7:c (3 players)
MP3 bets $3.00, Hero calls $3.00, BU calls $3.00.

Turn: ($14.25) J:s (3 players)
MP3 checks, Hero bets $10.00, BU raises to $20.00, MP3 folds, Hero ???

Is he raising turn with 8x or combo draws? What is the best play here?