1. happily

2. economically

3. products 

4. readers

5. necessary

6. appliances

7. innovations

8. conserve

9. replacing

10. solar

11. reduction

12. landing

13. organization

14. attentively

15. informative

16. clarity

1. They live happily in a small village 

2. You should spend your money and energy as economical as possible 

3. You can buy waste products made from this factory 

4. This library is open to all readers. 

5. Air and water are necessary for our life 

6. My brother can repair electric appliances very well 

7. These innovations will conserve the earth 

8. Since the world's energy resources are limited, we must conserve them 

9. We suggest replacing the light bulb. It is broken 

10.To keep the air unpolluted, people ought to use solar energy to create electricity

11. There has been a reduction of 10% in the amount of money available for buying the new books.

12. The alpine landing is very dramatic.

13. Women who are slimming can never enjoy a meal without being afraid of organizing their diet.

14. She always listens attentively to what she is told.

15. He was informative of the consequences in advance.

16. The professor explained his ideas with great clearly