THE BOOK IS 50,000 DONG. THE RULER IS 10,000 DONG AND THE ERASER I...

17. - KIEM TRA GIUA HOC KI
Tiếng Anh KIEM TRA GIUA HOC KI
17. The book is 50,000 dong. The ruler is 10,000 dong and the eraser is 5,000 dong. So, theeraser is the………….. one.A. cheapest B. expensive C. most cheap D. cheaper