MS. LY IS IN CHARGE OF CLEANING THE FLOOR EVERY DAY. (HAS TO) MS....

50. Ms. Ly is in charge of cleaning the floor every day. (has to)

 Ms. Ly________________________________________________________________________

---H tế ---Thí sinh không đượ ử ục s d ng tài li u, cán b coi thi không gi i thích gì thêmệ