16.Factory(own)_____let the waste run into the river. 17. He is the most (effect)_______activist in the town. 18. Life always needs a lot of (innovate)________. 19. Solar energy is cheap but its (install)_____is expensive. 20. The weather today is (extreme)_______hot. 21. We find advertising on the radio very (efficiency)______. 22. These (innovate)_______will save money as well as conserve the earth's resources. 23. If we go on wasting water, we will be a fresh water (short)_____in a few decades. 24. Nowadays (consume)________want more information about the food they buy. 25. All building in Sweden will be heated by (sun)____energy in 2015. 26. They've measured the car's fuel (consume)______. 27. What can we do to spend less on (light)________. 28. They provided food and the shelter for the (poverty)_______. 29. They are searching for intelligent life forms in other(sun)______systems. 30. This fire doesn't give out much (hot)______.
16. Factory owners should not let the waste run into the river.
17. He is the most effective activist in the town.
18. Life always needs a lot of innovation.
19. Solar energy is cheap but its installation is expensive.
20. The weather today is extremely hot.
21. We find advertising on the radio very efficient.
22. These innovations will save money as well as conserve the earth's resources.
23. If we go on wasting water, we will be a freshwater shortage in a few decades.
24. Nowadays consumers want more information about the food they buy.
25. All buildings in Sweden will be heated by solar energy in 2015.
26. They've measured the car's fuel consumption.
27. What can we do to spend less on lighting?
28. They provided food and shelter for the poor.
29. They are searching for intelligent life forms in other solar systems.
30. This fire doesn't give out much heat.
