雅思有一道听力题为it's in the Library答案就是Library,这里的library为什么要大写呢,答案

it's near the library at the library 跟in the library有区别吗? at the library和in the library有什么区别? in the library还是at the library? at the library与in the library Where's the library we____talk in the library It's south （）the library填空 Maybe he's s____ in the library. in、on、at什么时候加the?比如为什么in the library,不是in library He is in the library对in the library提问 -IS jack in the library?