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 dioxidethat 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.lowenergy 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.