1. We must use electricity .............economically..................... ( economy ) 2. ......Solar............... energy is the best alternative source of energy ( sun ) 3. Some volunteer ....conservationists.......................... are cleaning up the beach ( conserve ). 4. .......Prevention........... is better than cure ( prevent ) 5. A good body and love from our parents are the most .......priceless.................. thing I have ( price). 6. These toys made in the USA is .....harmful.......... to children ( harm ) 7. Food is a .........needy...... of our life ( need ). 8. No doubt there will be a great ............shortage.............. of food for the world's population ( short ). 9. I am .............extremely....... disappointed to know my children have not cleaned up all the trash ( extreme ). 10. Neighbors ...............complained.............. to the police about the noise from that house last night ( complaint ) 11. White ao dai symbolizes the ...............purity..... of the girl students ( pure ) 12. Smoking does harm ...................Đề sai :)............ to people's health ( repair ). 13. Speaking in pubic seems to come quite ..........natural.................. to her ( nature ). 14. We are looking forward to the latest ............innovation.............. in computer technology ( innovate ). 15. ............Ultimately........................, you will have to make the decision yourself ( ultimate ). 16. The lava in the volcano ...........solidifies................ as it cools ( solid ). 17. Paper and most plastics are ..............recycled............... materials ( recycle ). 18. What should you do at school to ..............minimize................... pollution ! ( minimum )

1. Economically

2. Solar

3. Conservationists

4. Prevention

5. Priceless

6. Harmful

7. Needy

8. Shortage

9. Extremely

10. Complained

11. Purity

13. Natural

14. Innovation

15. Ultimately

16. Solidifies

17. Recycled

18. Recycled

19. Minimize

I.Supply the correct form of the works in brackets

1.The computer is one of the most marvelous.invention.in our modern age (invent)

2.playing games for too long can be..harmful.to their children's health (harm)

3.A computer is very.powerful.(power)

4.Have you conneeted the printer.properly.(proper)

5.A well.educated..person must have a good knowledge of computer selence (educate)

6 ..Careless.. driving is very dangerous for one's life (care)

7.The talk was both.informative.and entertaining (inform)

8.Always read the..instruction.before you start (instruct)

9.Watching television can be time.consuming.(consume)

10.We have three new .trainers.in our computer center (train)

1, inventions

2, harmful

3, powerful

4, properly

5, educated ( well-educated)

6, Careless

7, informative

8, instruction

9, consuming (time-consuming)

10, trainers

1. peaceful

2. harmless

3. The old man looked disappointedly at his herd of cattle ( disappoint)
6. It only takes a second's carelessness to cause an accident ( care)
8. The goverment has planned to oppose deforestation (forest)
10. Young generation should join the discussion on creating and maintaining a healthy lifestyle ( health)
13. Who encourages the use of environmentally friendly product ? ( enviroment)
14. My father gave up smoking because he knows it is harmful to health ( harm)
15. The vegetables were spayed a lot of pesticide so they became poisonous (poison)
16. He believes that unemployment is socially divisive (divide)
17. Because exhaust fume in the air, more and more people will cope with respiratory problem nowadays ( respire)
19 Reduction of garbage makes our enviroment clearer anf clearer ( reduce)
20. Prevention measure of bird flu have just been announced nationwide (prevent)
22. These days beaches are covered with pollution (pollute)
24. I have a special diet to reduce harmful high sugar levels in blood ( harm )
25. The American Red cross helps people prevent and respond to poisoning (poison)

1.The little village is very quiet and peaceful (peace)

2.Many people still to believe that smoking is harmful (harm)

3.He is interested in the preservation of old buildings (preserve)

4.The industrial area of the city is not very attactive (industry)

5.His performance in Hamlet was most impressive (impress)

1. peaceful

2. harmful

3. preservation

4. industrial

5. impressive

6. surroundings

4. The ....industrial....... area of the city is not very attractive (industry)

5. His perfomance in Hamlet was most .........impressive.......... (impress)

6. I live in a small village and its ........surrounding...... are very beautiful (surround)

1)Mrs.Jones is going to...collect........all the rubbish (collection)

2)How about...going.....for a picnic this weekend? (go)

3)It was difficult for me to tell the.....difference.......between the two houses (different)

4)Smoking is very....harmful.....to our health (harm)

5)She found it......extremely...difficult to get a job (extreme)

6)The........destruction.....of the floods this year has been very terrible (detroy)

1 death

2 economical

3 harmful

4 weakness

5 unforgetable 

6 impatience

7 careless

8 knowledge

9 shortened

10 satisfying

11 proud

12 applicants

accommodation

Pollution

harmful chỗ này thiếu tobe verb nè :>

behavior

participants

1. accommodation

2. pollution

3. harmful 

4. behaviour

5. participant