1.Keep quiet,please!

　　請保持安靜!

　　2.you should return the book on time.

　　你應(yīng)該按時把借的圖書還給圖書館.

　　3.You should put the book back on the right shelf when you finish it.

　　當(dāng)你看完的時候,你應(yīng)該放回正確的書架上.

　　4.Take care of the book.

　　要愛護書籍.

　　5.Don't draw or write anything on the page.

　　不要在書上亂涂亂畫.