i'm reading books [in the library}{对划线部分提问} 划线就是括号{ } { } you reading books?

i'm reading books [in the library}{对划线部分提问} 划线就是括号{ } { } you reading books?
i'm reading books [in the library}{对划线部分提问} 划线就是括号
{ } { } you reading books?

i'm reading books [in the library}{对划线部分提问} 划线就是括号{ } { } you reading books?
Where are you reading books?