II. My grandfather lives in Green Field. It is a small town near the mountains. Twenty years ago, it (47) quiet andthere (48) a few stores there. The river was clean. The trees were tall and green. There were farms (49) .Now, everything (50) different in Green Field. There is a new train station in town. Many people come and live there.The streets are wide, and the (51) are tall. However, the (52) is heavy and the river is dirty. My grandfatherdoesn’t like it. [課本p.114]