Hi, everyone I know, I know, in hundreds of threads of this kind the same theme has been discussed, but I really want to make it clear just in the following sentence: 1 Mary is the girl whom I often play tennis with. 2 Mary is the girl who I often play tennis with. 3 Mary is the girl I often play tennis with. 4 Mary is the girl with whom I often play tennis. Please tell me again how each sentence sounds to you in either colloquial speech or writing.