IT'S NOT EASY TO CHANGE PEOPLE'S ________ TOWARD A CERTAIN PROBLEM...

17. - KIEM TRA 1TIET SO 1 TRON 4 DE
KIEM TRA 1TIET SO 1 TRON 4 DE
17. It's not easy to change people's ________ toward a certain problem . A. attitude B. thinking C. opinion D. idea