10 NL TT OOP river WTF?

[monkeymaps]

villian just sat down no reads seem std donk.
should have bet more on flop and turn right?
river std?

Poker Stars - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $6.70
BB: $3.20
Hero (UTG): $17.20
MP: $5.90
CO: $9.40
BTN: $19.85

Preflop: Hero is dealt T T (6 Players)
<font color="red">Hero raises to $0.40</font>, MP calls $0.40, CO folds, BTN calls $0.40, SB calls $0.35, BB folds

Flop: ($1.70) 6[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (4 Players)
SB checks, <font color="red">Hero bets $1.00</font>, MP calls $1.00, BTN folds, SB folds

Turn: ($3.70) 6 (2 Players)
<font color="red">Hero bets $2.00</font>, MP calls $2.00

River: ($7.70) 3[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">MP bets $1.00</font>, Hero calls $1.00