My best friend is s----- to my sister

My best friend is s----- to my sister She is a friend ( )my sister's Linda is my sister's the best friend. 中有一处错误,请指出并改正. my sister is going to ___ ____ for her best friend.(画一张画) My best friend is ( ) My best friend is( ) My best friend's Day my best friend’s hobby My sister is a doctor .She does her best to save people"s ( He is my best friend Loneliness is my best friend Alex,friend,my,is,best(.)