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

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