Притяжательные существительные! помогите, пожалуйста.Some phrases contain mistakes. Correct

Притяжательные существительные! помогите, пожалуйста.Some phrases contain mistakes. Correct them and give explanations.
1) Is he a friend of your father? 2) On her way home she usually bought a slice of honey-cake at the baker. 3) I am not good at other people's affairs. 4) Their house is at two mile's distance from here. 5) But they would read about it in tomorrow papers.6) I am thinking of a cousin of my father, who was a well-known physician. 7) The two guests of Nelly are still in. 8) I will remember that nice smile of your mother.9) It wouldn't surprise me if they changed their tune in a few months time. 10) I saw him just at your aunt. 11) What kind of girl was this wife of Jon? 12) Frankly speaking, this business of your wife's seems to me rather out of my class. 13) Now he allowed his hair to grow like a man's. 14) Jack and Johns educations are outstanding.