11. To keep the air unpolluted, people ought to use ____ energy to create electricity. (sun)
12. There have been many ____  in the field of electrical engineering.(innovate)
13. Televisions, dishwashers and freezers are electrical ____. (apply)
14. No doubt that there will be a great ______ of food for the world's population. (short) 
15. If there is something wrong with the lights, ask an _____ to look at it. (electric)  
16. An old friend of mine felt amazed at the prize for her efforts at ____ in her country. (conserve)
17. The campaign against air pollution was organized by a famous _____ activist. (environment)
18. She carries a gun in her bag for personal ____. (protect)
19. Energy ____ is a problem all over the world. (conserve)
20. As it hasn't rained for months, there has been a serious____ of fresh water. (short) 

1. Because of the shortage of water, we should use it very ___ (effect)
2. Saving money is ____ to all of us. (profit) 
3. ______ from his friends made him sad. (separate)
4. Have you ever met Susan ______? (recent)
5. You should always try to behave quite _______ (ordinary)
6. Scientist succeeded in _______ oxygen. (solid)
7. Susan won the prize for _____ of attendance at school last month. (regular)
8. He is responsible for the heating ______ of this building. (install)
9. Energy-saving bulb should be used to save _____. (electrify)
10. A _____ is the person who installs and repairs thing such as water pipes, toilets, etc....(plumbing)

the earthquake in kobe in 1995 caused a lot of damage

-> a lot of damage___________

tet is a festival which _____________ in late january or early february

a. occurring b. takes place c. happen d. is occured

my father is the most careful driver in the world

-> no one else

1.mr.john was sick, but he tried to go to the meeting

-> in spite of_______________

2.my father is the best person in the world

->no one else______________

3.don't be impatient, or you will make regrettable mistakes

->if ___________________

many _________activities take place in different parts of Vietnam at tet (culture)

________they performed very well, they didn't feel excited

a. in spite of b.despite c.although d.because of

was the movies "star wars"_________ for an oscar?

a.taken b.recognized c.nominated d.accepted