1. We must conserve water. Otherwise we will face serious water shortages. (IF)

2. The weather was awful. We didn't enjoy our camping holiday. (BECAUSE OF)

3. Plastic bags are non-biodegradable. They will remain in the environment for many years. (SINCE)

4. Paul doesn't think about the planet. He wastes so much water. (IF)

5. Water pollution happens. Many aquatic animals such as fish can die. (LEAD)

6. The climate is changing. The earth is getting warmer. (BECAUSE)

7 We should stop cutting down so many trees. We endanger our oxygen supply. (UNLESS)

8. People begin to recycle. They generate much less trash. (WHEN) SI

9 We are damaging the ozone layer. The ozone layer is necessary for human existence (EVEN THOUGH)

10. Sue is suffering from skin cancer. She was exposed to radiation when she was young. (SO)

Xong rui nha ban!Nho bam 5 sao cho minh