PokerStars No-Limit Hold'em, $0.50 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($28.85)
Hero ($53.85)
UTG ($27.75)
MP1 ($34.40)
MP2 ($35.25)
CO ($26.50)
Button ($47.95)

Preflop: Hero is BB with K, 7.
1 fold, MP1 calls $0.50, 2 folds, Button calls $0.50, SB completes, Hero checks.

Flop: ($2) T, K, K (4 players)
SB checks, Hero bets $1.4, MP1 calls $1.40, Button folds, SB folds.

Turn: ($4.80) 3 (2 players)
Hero checks, MP1 bets $3, Hero calls $3.

River: ($10.80) 6 (2 players)
Hero checks, MP1 bets $10, Hero ???

I always have a trouble dealing with these hands (i.e. high trips with no kicker).
villain was 18/4.6/0.8
Can you call the river bet? The trouble is that a pair of Ts would not bet the turn and river ... however, the probability of him having a K is low ...