These are the rules ( ) the library?(介词)

These are the rules ( ) the library?(介词) These are the rules ______my school 是rules for library还是rules in the library? what are the rules in these places 的意思 These rules are _____.Not all the studdents like them 《rules in the library》小作文 These days they are busy ( ) the farm work填介词 英语小作文:The rules for the library.不要照片 Are the new rules working? "Are the new rules working " Everybody must obey these rules as they are for the good of what are the rules at your school为什么用介词at不用in