选择正确的单词完成短文。

    Mr Green  (is／was)a doctor before. He was from America. He got up early and (goes／went)to work by car. There were always many sick people in the hospital. Mr Green was very busy in the day time. Sometimes he had no time to eat lunch. He liked eating Chinese  food and (playing／play)Chinese kung fu. Now he is in Beijing，and becomes   (a／an)English teacher. He often plays games  (with／to)us. Now he can speak Chinese well，too!