B. VOCABULARY AND GRAMMAR
I. Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word. 
 1. At this time next week we    to work to support the air pollution cutting down campaign.
 A. are cycling B. will be cycling C. will cycle D. will be cycled
 2. Someone’s carbon    is a measurement of the amount of carbon dioxide that their activities produce.
 A. footprint B. energy C. effect D. amount
 3. Remember to    the lights before going to bed.
 A. turn on B. stop C. turn D. turn off
 4. We will cut down in the use of natural gas because it is    and harmful to the environment.
 A. available B. abundant C. plenty D. limited
 5. Hydro power is   because dams cannot be built in certain areas.
 A. abundant B. enough C. limited D. unlimited
 6.   source of energy is the source that can’t be replaced after use.
 A. Effective B. Non-renewable C. Renewable D. Natural
 7. Which of the following is NOT renewable source of energy?
 A. wind B. coal ( than đá )  C. hydro D. solar
 8. We are looking for cheap, clean and    sources of energy.
 A. serious B. dangerous C. effective D. efficient
 9. By the middle of the 21st century, people in developing countries    more renewable energy.
 A. used B. have used C. uses D. will be using
 10. If we go on    electricity, we will have to pay a lot next month.
 A. turning on B. widened C. wasting D. increasing
 11. Biogas is    and cheap for cooking and heating.
 A. serious B. expensive C. plenty D. abundant
 12. We should put   on our roof for the heating and hot water.
 A. equipment B. cracks C. solar energy D. solar panels ( tấm pin năng lượng mặt trời )
 13. In many countries, people think that electricity, gas and water are not luxuries but    .
 A. necessities B. appliances C. sales D. consumers
 14. We should use   light bulbs in our homes.
 A. a bit energy B. efficient C. low energy D. little energy
 15. A hydropower station    in the North of the country next year.
 A. will be built B. has been built C. was built D. were built
II. Turn into passive.
 1. Students will use public transport to go to school.
 →  public transport will be use by students to go to school
 2. Solar power will generate a great deal of electricity this summer.
 → a great deal of electricity will be generated by solar power this summer
 3. Will they install the solar panels on the roof of the house tomorrow?
 → will the solar panels be installed on the roof....?
 4. Local people won’t burn plants to heat this winter.
 → plants won't be burnt to heat this winter by local people 
 5. The smoke from factories will pollute the air.
 → the air will be polluted by the smoke from factories 
 6. They will build a hydro power station in this area.
 → a hydro power station will be built in this area 
III. Put the verbs in brackets in the correct tense forms to complete the sentences.
 1. I    (study) at 8.00 tomorrow.  will study 
 2. You    (wait) for her when her plane arrives tonight?   will you wait 
 3. Don’t phone me between 7 and 8. We    (have) dinner then.    are having 
 4. What clothes do you think she    (wear) when she arrives?    will wear 
 5. I    (send) in my application tomorrow.   will send 
 6. Linda     (arrive) in Ha Noi around March.  will arrive 
 7. Next week at this time, you    (lie) on the beach.   will be lying 
 8. My uncle can’t come to your party tomorrow night because he   (work) at night.    will work 
 9. You    (meet) your former teachers at 9 a.m. tomorrow morning, won’t you?   you will 
 10. At this time tomorrow evening, I    (play) computer games in my bedroom.   will be playing 
IV. Give the correct form of the words given to complete sentences.
 1. We should use them     and try to find out  ECONOMY   alternative sources of power.   economical 
 2. Solar energy is   , plentiful and clean.   RENEWable 
 3. I think that solar energy can be an     source of ALTER   energy in the near future.   alternative 
 4. We should reduce the use of     at home.  ELECTRIcity 
 5. It’s a clean source of energy. Sailboats couldn’t move without POWERFUL   this   .   powering 
 6. Waves will be used as an    friendly source of energy. ENVIRONMENTal
 7. Limit car trips by relying on biking, walking, public   TRANSPORTing
 8. Solar power can be used to     or cool our houses. HOT     heat 
 9. Energy is used to    a lot of electrical things.  PRODUCT             produce 
 10. There will be a    of energy in the near future.  SHORT     shortage