I. Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word.
1.                 Nuclear energy is                    , but it is dangerous.
A.    renewable               B. non-renewable        C. natural resource      D. fossil fuel
2.                 Fossil fuels are very common in our society but they              the environment.
A.    waste                      B. pollute                    C. renew                      D. provide
3.                 All the houses in our village will be                 by solar energy.
A.    frozen                     B. widened                 C. heated                     D. heightened
4.                 Several governments try to                  the use of fossil fuels.
A.    waste                      B. save                        C. reduce                     D. increase
5.                 At this time next week, we                 a wind turbine in our garden.
A.    will installed           B. will be installing     C. install                      D. installed
6.                 Low energy light bulbs should be used to                   electricity.
A.    convert                   B. save                        C. spend                      D. buy
7.                 It is a good idea to use            when travelling long distances.
 
A.    private cars             B. public transport      C. cars                         D. taxis
8.                 “Why is it called a                   source?” - “Because it can be replaced easily and quickly.”
A.    renewable               B. non-renewable        C. effective                 D. specific
9.                 We must           the amount of water our family use every day.
A.    lessen                      B. narrow                    C. lower                      D. reduce
10.            Wave energy is a source of                  energy.
A.    environmental friendly                               B. environmentally friendliness
C. environment friendly                                  D. environmentally friendly
11.            Alternative sources of energy              developed in the near future.
A.    has been                  B. will be                     C. is                             D. was
12.            She                   cooking in the kitchen at 7 PM tomorrow.
A.    will                         B. is                             C. will be                     D. be
13.            Some new energy-saving bulbs           in the dining room.
A.    will be put              B. will put be              C. will put                   D. will be putting
14.            What should we do to             electricity?
A.    take                         B. save                        C. cut                          D. waste
15.            The wind, the sun, and the wave are some types of                sources of energy.
A.    cheap                      B. costly                      C. changeable              D. alternative