IT'S TIME YOU ________ HARDER FOR THE NEXT EXAM

18. - E 11 3 TONG BT TRAC NGHIEM HK1
E 11 3 TONG BT TRAC NGHIEM HK1
18. It's time you ________ harder for the next exam.face are her green eyes and the two dimples on her checks. She (36) ______ a. work b. are working c. worked d. have worked