【正文】
ome cities, the air (3)________ (fill) with pollution. This makes people ill, and more people (4)_____________ (hurt) in the future if it is not cleaned up. As well as people, animals (5)___________ (harm) by pollution. Land and water pollution kills many animals every year. If we do not act to improve the environment, is filled will be hurt are harmed more living things (6)____________ (kill) by pollution. However, there is some good news. A show (7)___________ (hold) at the town hall this Friday evening. All of us will have a chance to think about the world around us. On that day, we (8)_____________ (show) how to protect the environment. If we work together, we can make the world a better place. will be killed will be held will be shown 1. Review the contents of this lesson. 2. Finish the exercises in the workbook. 3. Preview the next lesson