英文缩写H1N1 的含义是_______________.硬黑 B. 光盘 C. 甲型流感 D. 乙型流感
—Is this your brother? —No,_______
The teacher’s name is John Brown . His students call him ________ .
— Have a good day! — __________________.
—Are these your grandparents? —No, ___________.
—_______ is your pen? —It’s yellow.