21. Scientists are looking for an ____ way to reduce energy consumption. (effect)
22. I want to see the _____ of environment from the local authority. (protect)
23. Solar energy is ____ by the sun. (provision)
24. What can we do _____ energy? (conservation)
25. Kristen, remember to use energy more ______! (efficient)
26. She was _____ pleased that she passed the exam. (extreme)
27. He is one of the best _____ in the world. (environment)
28. We can ____ the environment by reducing air _____(protection/pollute)
29. It's _____ that he has overcome all difficulties. (wonder)
30. want to see the _____ of environment from the local authority. (protect)
31. Scientists are looking for an ____ way to reduce energy _____ (consume)
32. There have been some __________ in unemployment. (reduce)
33. That lamp uses very little _______. (electric)
