8. We are trying to find the reason why it is (有害的) to health to eat too much fast food.

7. His car stood in the parking place for a long time,with thick (灰尘) .

6. Our (调查) may provide you with some useful information.

5. You will have a car accident if you keep driving so (粗心大意地) .

4. What's the oldest (活着的) thing you can think of?

3. If you are strong enough,no people can (伤害) you.

2. Cars will not only (污染) the air in cities,but also make the street crowded

一、单词拼写

1. Many stores like (陈列) their goods in the windows.

7. 如果我们不行动起来改善环境，更多的生物将会死于污染。

6. 关于如何保护环境的方法将会进行讨论。