Unit 71. how much 多少钱2. Here you are. 给你。 3. Youre welcome. 不客气。4. clothes store 服装店5. great sale 大减价6. a good price合适的价格7. T-shirts in red 红色T恤衫8. buy from 从买9. sell to 买给10. have a look 看一看,瞧一瞧11. on sale 出售,廉价出售Unit 81. Happy birthday.生日快乐。2. date of birth 出生日期 = =birthday3. how old 几岁,多大年纪4. speech contest 演讲比赛5. school trip郊游, 校游6. baske