1. Conservationists, conservation

2. unpolluted 

3. careless

4. prohibition

5. disappointed

6. deforestation 

7. invention, achievement

8. solution 

9. excitement

10. valuable 

11. coastal

12. sightseer

13. enthusiastic 

14. disappointing 

15. polluted

16. environmentalist 

17. unpolluted 

18. sewage

19. pollute 

20. complaint

1)………Conservationist……..call for the ……conservation…………of the countryside.( conserve )

2) People must learn about keeping the environment ……unpolluted…………(pollute)

3) It was very …careless…of you to leave the medicine where the children could get it.(care)

4) Environmental groups want a total…prohibition..on the dumping of nuclear waste  (prohibit)

5) I am ……disappointed………..that people have spoiled this area.(disappoint)

6) They are meeting to find ways to protect the forests from……deforestation………(forest).

7) The…invetion…….of computers is one of the recent…achievement…in our time (invent-achieve)

8) The ……solution…….to the problem will be difficult to find.( solve)

9) The news has caused ……excitement……………among scientists.( excite)

10) Thanks a lot for your……valuable……….help. (value)

11) Rain will reach……………coastal………areas at the end of this week.(coast)

12) Many …………sightseer……walked around the tourist attraction to take photos.(sight)

13) Thanks to …enthusiastic….conservationists, many kinds of plants and animals are protected. ( enthusiasm)

14) It is……disappointing………….that some people poach fish in the Nhieu Loc Canal.(disappoint)

15) We are worried that rivers and canals are becoming more and more …polluted…( pollute)

16) The…environmentalist…………were disappointed that people had spoiled the area. (environmental)

17) In order to keep our environment……unpolluted…..…, we shouldn’t drop litter in public places (pollute)

18) Don’t pump……sewage………. into seas and rivers or it will pollute them (sew)

19) If we keep on..pollute. the air, more people will suffer from respiratory diseases (pollution)

20) The local authorities have received many letters of……complaint…. about the industrial wastes from that factory (complain)