5-10 Call Down with pair 7s

[Diacon]

This is true. But his range was bigger than AJ, JJ+. And he will check river without this cards or will bet with air. This time i was true, he show me KQo.

Vs this guy i didnt want fold my pair, i didnt want lose so mutch vs middle hans, like 99 or QJ on 2 buy-in, thats why i played: check,call because i was sure, that he should chek river with middle hand. is it better play in this street check/raise/fold or bet in future????