Choose the correct answers. 16. What should we do to________ electricity? a. cut b. take c. save d. waste 17. Someone's carbon_______ is a measurement of the amount of carbon dioxide that their activities produce. a. effect b. amount c. footprint d. energy 18. _____ source of energy is the source that can't be replaced after use. a. Renewable b. Natural c. Effective d. Non-renewable 19. We are looking for cheap, clean and _____ sources of energy. a. effective b. efficient c. serious dangerous 20. We should put______ on our roof for the haeting and hot water. a. solar energy b. equipment c. cracks d. solar panels 21. We should use______ light bulbs in our homes. a. low energy b. little energy c. a bit energy d. efficient 22. In my opinion, nuclear power is not only expensive but also_____ to our environment. a. danger b. dangerous c. risk d. disaster 23. Several governments try to _____ the use of fossil fuels. a. reduce b. increase c. waste d. save 24. It is a good idea to use_____ when travelling long distances. a. cars b. taxis c. private cars d. public transport 25. Wave energy is a sorce of______ energy. a. environment friendly b. environmentallt friendly c. environmental friendly d. environmentally friendliness 26. Remember to_____ the lights before going to bed. a. turn b. turn off c. turn on d. stop 27. A hydropower station_____ in the North of the country next year. a. was built b. were built c. will be built d. has been built 28. Biogas is_____ and cheap for cooking and heating. a. plenty b. abundant c. serious d. expensive 29. ''Why is it called a _____ souce?'' - ''Because it can be replaced easily and quickly.'' a. effective b. specific c. renewable d. non-renewable 30. At this time next week, we_____ a wind turbin in our garden. a. install b. installed c. will installed d. will be installing 31. Alternative sources of energy______ developed in the near future. a. is b. was c. has been d. will be 32. Hydro power is_____ because dams cannot be built in certtain areas. a. limited b. unlimited c. abundant d. enough 33. Fossil fuels are very common in our society but they_____ the environment. a. renew b. provide c. waste d. pollute 34. By the middle of the 21stcentury, people in developing countries_____ more renewable energy. a. uses b. will be using c. used d. have used 35. The wind, the sun, and the wave are some types of______ sources of energy. a. changeable b. alternative c. cheap d. costly

16. What should we do to________ electricity?

a. cut b. take c. save d. waste

17. Someone's carbon_______ is a measurement of the amount of carbon dioxide that their activities produce.

a. effect b. amount c. footprint d. energy

18. _____ source of energy is the source that can't be replaced after use.

a. Renewable b. Natural c. Effective d. Non-renewable

19. We are looking for cheap, clean and _____ sources of energy.

a. effective b. efficient c. serious dangerous

20. We should put______ on our roof for the haeting and hot water.

a. solar energy b. equipment c. cracks d. solar panels

21. We should use______ light bulbs in our homes.

a. low energy b. little energy c. a bit energy d. efficient

22. In my opinion, nuclear power is not only expensive but also_____ to our environment.

a. danger b. dangerous c. risk d. disaster

23. Several governments try to _____ the use of fossil fuels.

a. reduce b. increase c. waste d. save

24. It is a good idea to use_____ when travelling long distances.

a. cars b. taxis c. private cars d. public transport

25. Wave energy is a sorce of______ energy.

a. environment friendly b. environmentallt friendly c. environmental friendly d. environmentally friendliness

26. Remember to_____ the lights before going to bed.

a. turn b. turn off c. turn on d. stop

27. A hydropower station_____ in the North of the country next year.

a. was built b. were built c. will be built d. has been built

28. Biogas is_____ and cheap for cooking and heating.

a. plenty b. abundant c. serious d. expensive

29. ''Why is it called a _____ souce?'' - ''Because it can be replaced easily and quickly.''

a. effective b. specific c. renewable d. non-renewable

30. At this time next week, we_____ a wind turbin in our garden.

a. install b. installed c. will installed d. will be installing

31. Alternative sources of energy______ developed in the near future.

a. is b. was c. has been d. will be

32. Hydro power is_____ because dams cannot be built in certtain areas.

a. limited b. unlimited c. abundant d. enough

33. Fossil fuels are very common in our society but they_____ the environment.

a. renew b. provide c. waste d. pollute

34. By the middle of the 21stcentury, people in developing countries_____ more renewable energy.

a. uses b. will be using c. used d. have used

35. The wind, the sun, and the wave are some types of______ sources of energy.

a. changeable b. alternative c. cheap d. costly