1.Keep quiet，please!请保持安静！2.you should return the book on time.你应该按时把借的图书还给图书馆。3.You should put the book back on thright shelf when you finish it.当你看完的时候，你应该放回正确的书。4.Take care of the book.要爱护书籍。5.Don't draw or write anything on the.不要在书上乱涂乱画。7 Doing homework in the library is allowed. All stationery, with the excep of those needed for information collection, should not be brought intolibrary.8 Unless under very special circumsta borrowing someone else's library carnot allowed. Loss of library card shou reported to the library teacher and application should be made for replacement.