Ex5: Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
There is now increasing concern about the world’s energy (33) ___________, particularly about those involving fossil (34)___________. In less than a hundred years we shall probably use up all the present (35)___________ of oil and gas. The world’s coal reserves should last longer but, once used, these cannot (36)___________. It is important, therefore, that we should develop such (37)___________ sources of energy as solar energy as well as water and wind power, classed as renewable energy.
33. *
possessions
resources
goods
materials
34. *
fuels
powers
forms
energies
35. *
findings
productions
amounts
sources
36. *
updated
repeated
renewed
produced
37. *
traditional
alternative
revolutionary
surprising
