Betty draws a family tree.读一读，根据图片提示，用适当的单词把句子补充完整。
Mr. and Green are old now. But they still work. They both work in a hospital. Mr. Green is a .Mrs. Green is a . Every day, they go to work together. They have sons(儿子).Their first(第一) son is Jim Green. He is a .His wife(妻子) is a . She drives a red taxi. Their second(第二) son is Green. He is a . He likes growing vegetables. His wife is an .
