(i) By saying, only trying to be neighborly, Sir”. Jo means she just wanted to be friendly with Laurie as he was her neighbor. She strongly felt that neighbors should know each other well.
(ii) Jo had observed Laurie now and again and she felt Laurie badly needed company since he always eagerly looked at his neighbors as if he was missing the fun they were having. To her, he appeared to be a lonely boy longing for enjoyment with friends.
(iii) Jo remembered the beautiful Christmas present that was sent to the March family by their neighbor Mr. Laurence and she felt it was a nice gesture by their neighbor.