Zhang Lin is a middle school student. He is a good boy. Uncle Wu lives next to him. Uncle Wu has no child and can't see anything. He works in the factory   near Zhang Lin's school. He goes to work at 7:30 in the morning and comes home at 4:30 in the afternoon. Zhang Lin walks to school at 8:00 in the morning and comes home at the same time as Uncle Wu in the afternoon. On weekdays Zhang Lin gets up early to take Uncle Wu to the factory. After school he takes him home. On Sundays Zhang Lin helps Uncle Wu clean the house and do some cooking. Uncle Wu thanks Zhang Lin very much. He says, "Zhang Lin is a good boy. He is like my son." Which of the following is right ?
Zhang Lin likes Uncle Wu's son. Zhang Lin is Uncle Wu's son. Zhang Lin looks like Uncle Wu's son. Zhang Lin is like Uncle Wu's son.