This is a teacher's family.The father's name is Tom Smith. He is forty--four.The mother''s name is Kate Smith.She's forty-two.They have a son,Jim,and a daughter, Ann.Jim is fourteen, and Ann is twelve .The son looks like his father ,and the daughter looks like her mother .They are all in No. 4 Middle school.But the Smiths are teachers ,the son and the daughter are students. What  is  Jim's  father?He is  _
a woker a teacher a doctor a driver