1.New devices have been invented to help people live 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 had lunch,i had watched an interesting film

6.The cyclone has resulted in many thousands of deaths

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

8.If the factory weren’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 much money now,i would buy a house in Phucuong

11.Mr Nam has taught english for 20 years

12.After Philip had gone out,they arrived

13.The fire resulted in there was damage to our property 

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.