Hoa is six years old. Lan is seven years old.15/15 Hoa is six years old. Lan is seven years old.Hoa is younger than Lan.Hoa is older than Lan.Lan is younger than Hoa.Hoa is as young as Lan.Giải thíchĐáp án A Dịch: Hoa năm nay 6 tuổi còn Lan 7 tuổi. (Hoa thì trẻ hơn Lan.)