1. The World Health _______organization__________ is an international one. (organize)

2. Many people became __________homeless_______ after the storm. (home)

3. The tiger wanted to see the farmer’s _________wisdom________. (wise)

4. I can’t finish this task without your ________encouragement_________. encourage)

5. She ________attracted_________ everybody with a beautiful smile last night. (attractive)
 

6. When the _________electricity________ went out, he struck the match to find the candles. (electric)

7. He can play many kinds of _______musical__________ instruments. (music)

8. You should do your test _______carefully__________ if you want to get good marks. (care)

9. There was still no ________agreement_________ on what to do next. (agree)

10. Michael Faraday made a lot of __________invention_______ in the field of electronics. (invent)

11. Thomas Watson was Bell’s ____assistant____________, wasn’t he? (assist)

12. Acid rain can cause _________death________ to trees. (die)

13. We’ll prepare it as __________quickly_______ as possible. (quick)

14. Don’t drink that water! It’s _______contaminated__________. (contaminate)

15. Some people need ________medical_________ help because they have been infected with the virus. (medicine)

16. That fierce storm made the building ________badly_________ damaged. (bad)

17. A __________pollutant_______ is a substance that contaminates something. (pollute)

18. There is a link between exposure to ________radiation_________ and cancer. (radiate)

19. Nam thinks the food in this restaurant is _________tasty________. (taste)

20. Filters cannot remove all __________contamination_______ from water. (contaminate)