Ответы и объяснения

1)you have to be quiet and not disturb others!. 2)have quietly read my book!. 3)not to spoil the book! 3) not to shout and behave with dignity! 4)Is not in the library! 5)return books to their place! 6) do not put your feet on the table! 7 be careful with books.! 8)No brawl