[题目要求]
假如你是李明明，遗失了一个本书，请你用英语写一张50字左右的寻物启示，文章中应该包含：
1、书在哪里遗失的；
2、这本书对你很重要；
3、拾到者应该如何和你联系。
[参考范文]
notice
i lost a book in the big classroom, no. 228 this sunday. the name of the book is “how to improve your english”. i borrowed it from the library. so if anyone find this book, please call 612345678. thank you for your help.
li mingming
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