假定你是李華，上周日你不慎在學校操場丟失一個書包，里面有學生證、錢包等物品。你校外教Mr.Smith撿到后上交給學校。請你用英語給他寫一封感謝信，內容包括：
1.寫信目的；
2.描述事情經過；
3.再次表達感謝。
注意：
1.詞數100左右；
2.可以適當增加細節，以使行文連貫；
3.開頭和結尾已給出，不計入總詞數。
Dear Mr.Smith，
______
Yours，
Li Hua

【考點】提綱作文．

【答案】Dear Mr.Smith，
I'm Li Hua，a student from Class 1，Grade 2.I'm writing to thank you for returning my schoolbag.
Last Sunday，I left my schoolbag on the playground owing to my carelessness.I was worried because my student's ID card，wallet and some documents were all in it，which were very important to me.Just as I was at a loss.I was informed that my schoolbag was at the school's Lost and Found and it was you who had found my schoolbag.My excitement was truly beyond description at that moment!
Please accept my cordial thanks for your help.
                                                                                                                                                    Yours，
                                                                                                                                                    Li Hua