五、从方框中选择合适的句子补全对话，有一项多余。
Eric: What did you do last Mid-Autumn Festival?
Bob: 1. They live in the countryside.
Eric: What was it like before?
Bob: There were lots of factories. 2.
Eric: How is there now?
Bob: It is so nice. And there are fewer cars and factories. There is a small river near our house. 3.
Eric: That is so fun. 4.
Bob: Yes, I will. The river is clean. There are many fish in the river.
Eric: 5.
Bob: Yes. If we protect the environment now, the countryside will be better.

五、1. D 2. F 3. A 4. B 5. C

六、阅读短文，回答问题。
Many years ago, there were no tall buildings in our city. There were some small houses. Only a few people lived here. They were farmers and fishermen. The air was fresh. Now there are lots of tall buildings. Too many people live here. They do many different jobs. The traffic is busy and noisy.
1. Were there any small houses many years ago?

2. Was the air clean many years ago?

3. What jobs do people do in the city?

4. How’s the traffic now?

六、1. Yes, there were. 2. Yes, it was. 3. They do many different jobs in the city. 4. The traffic is busy and noisy.