Unit 5 It must belong to Carla,Whose polo shirt is this ? Whose CD is this? It must be Michael Jordans. It must be Song zuyings,Whose backpack is this? It must be s,words,band 带；箍 hair band 发带 drop 落下；掉下 symphony 交响乐；交响曲 optometrist 验光师；配镜师 appointment 约会；约定 algebra 代数；代数学 crucial 关键的；至关重要的 count 计；值 because of 因为 Chinese-English Dictionary 汉英词典 Oxford University 牛津大学,sentences,The backpack must bes. The school T-shirt could be s. The hair band might belong to . The tennis balls cant be s,名词所有格
