Chủ đề:
Bài 2: Cộng, trừ số hữu tỉCâu hỏi:
-125 mũ 4 chia 25 mũ 5
1.Katty ( sleep ) ................. when I arrived at her room. 2. The boy usually ( go ) ............... to school by bike, but today he ( walk ) .............. to school. 3. My father ( drink ) ............. coffee everyday, but this week he ( drink ) .................. tea.