WHICH UNDERLINED PART IS NOT CORRECT

25. - DE KIEM TRA 1 TIET HK1 LAN 2 CO DAP AN
DE KIEM TRA 1 TIET HK1 LAN 2 CO DAP AN
25. Which underlined part is NOT correct ? The first year at college was probably the best and more challeging year of my life . A B C D