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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 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 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. → 2. Solar power will generate a great deal of electricity this summer. → 3. Will they install the solar panels on the roof of the house tomorrow? → 4. Local people won’t burn plants to heat this winter. → 5. The smoke from factories will pollute the air. → 6. They will build a hydro power station 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. 2. You (wait) for her when her plane arrives tonight? 3. Don’t phone me between 7 and 8. We (have) dinner then. 4. What clothes do you think she (wear) when she arrives? 5. I (send) in my application tomorrow. 6. Linda (arrive) in Ha Noi around March. 7. Next week at this time, you (lie) on the beach. 8. My uncle can’t come to your party tomorrow night because he (work) at night. 9. You (meet) your former teachers at 9 a.m. tomorrow morning, won’t you? 10. At this time tomorrow evening, I (play) computer games in my bedroom. 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. 2. Solar energy is , plentiful and clean. RENEW 3. I think that solar energy can be an source of ALTER energy in the near future. 4. We should reduce the use of at home. ELECTRICAL 5. It’s a clean source of energy. Sailboats couldn’t move without POWERFUL this . 6. Waves will be used as an friendly source of energy. ENVIRONMENT 7. Limit car trips by relying on biking, walking, public TRANSPORT . 8. Solar power can be used to or cool our houses. HOT 9. Energy is used to a lot of electrical things. PRODUCT 10. There will be a of energy in the near future. SHORT

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