问题标题：
【libraryrules有哪些?要求用Youshould和Youshouldn't!】
问题描述：
libraryrules有哪些?
要求用Youshould和Youshouldn't!
饶立昌回答：
Youshouldkeepslienceinthereadingroom.Youshouldn'twritedownanythingonthebookswhichareborrowedfromthelibrary.Foodanddrinkarenotallowedinthelibrary.……
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