29. 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
30. If we go on__________ electricity, we will have to pay a lot next month.
A. turning on B. widened C. wasting D. increasing
31. Biogas is__________ and cheap for cooking and heating.
A. serious B. expensive C. plenty D. abundant
32. We should put__________ on our roof for the heating and hot water.
A. equipment B. cracks C. solar energy D. solar panels
33. In many countries, people think that electricity, gas and water are not luxuries but__________.
A. necessities B. appliances C. sales D. consumers
34. We should use light bulbs in our homes.
A. a bit energy B. efficient C. low energy D. little energy
35. A hydropower station__________ in the North of the country next year.

Question

29. 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
30. If we go on__________ electricity, we will have to pay a lot next month.
A. turning on 	B. widened		C. wasting		D. increasing
31. Biogas is__________ and cheap for cooking and heating.
A. serious		B. expensive	C. plenty		D. abundant
32. We should put__________ on our roof for the heating and hot water.
A. equipment	B. cracks		C. solar energy	D. solar panels
33. In many countries, people think that electricity, gas and water are not luxuries but__________.
A. necessities	B. appliances	C. sales		D. consumers
34. We should use	light bulbs in our homes.
A. a bit energy	B. efficient		C. low energy	D. little energy
35. A hydropower station__________ in the North of the country next year.

Accepted Answer

29. D. will be using
30. C. wasting
31. D. abundant
32. D. solar panels
33. A. necessities
34. B. efficient
35. will be built

29. 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 30. If we go on__________ electricity, we will ha...

29. 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 30. If we go on electricity, we will ha...