Giúp mình đi mai nộp rồi huhu

1. New devices have been invented to help people live a longer life by scientists.

2. Natural disasters have been caused by global warming.

3. If the local people had fresh water, they wouldn't have to use water from the polluted river.

4. After my mother had gone to work, I got up.

5. Before I watched an interesting film, I had had lunch.

6. The cyclone has resulted in many thousands of deaths.

7. After they had provided food, they cleared up the debris.

8. If the factory wasn't located near our village, there wouldn't be air pollution and noise pollution.

9. If farmers didn't use too many pesticides and herbicides, the soil wouldn't be poisoned.

10. If I had enough money now, I would buy a house in Phu Cuong.

11. Mr. Nam has taught/ has been teaching English for 20 years.

12. After Phillip had gone out, they arrived.

13. The fire resulted in property damage.