Thank You 谢谢你

Last week, when I went home after school, I went to a shop to buy something to drink. Then when I went out of the shop, I found my book was lost. I felt so worried and went back to the shop. The shop assistant helped me to search. Finally, she found the book in the corner. I felt so thankful to her. She was such a nice girl. 
上周，我放学回家的时候，我去商店买了一些喝的东西。当我走出商店的时候，我发现我的书不见了，我很担心，我回到了商店。售货员帮我找了找，终于，她在角落里找到了那本书，我对她感激万分。她真是个好女孩。