This is my schoolwork Dear sir or madam: I am a frequent user of the library and want to make one or two suggestions. First.As you know.the close time of the library is always 21pm.It's early to those students who wants to study more late.All of us are enjoying studying at the library and appreciate the quiet atmosphere.So it will be nice to extend the close time. Second.There is a terrible phenomenon in library that many students are inclining to occupy the sit all day even they doesn't use it.That is wasting the valued resource.It's essential to change this situation. Many thanks for considering my suggestions Liming