Part 1: Choose the corrrect answer (A,B,C or D)
1. The wind, the sun, and the wave are some types of.....................sources of energy.
   A. changeable              B. alternative              C. cheap                         D. costly
2. Alternative source of energy.....................developed in the near future.
   A. is                              B. was                        C. has been                    D. will be
3. Fossil fuels are very common in our society but they................the environment.
   A. renew                       B. provide                   C. waste                         D. pollute
4. "Why is it called a..................source?" - "Because it can be replaced easily and quickly".
   A. effective                    B. specific                   C. renewable                 D. non-renewable
5. Hydro power is....................because dams cannot be buiilt in certain areas.
   A. limited                       B. unlimited                 C. abundant                  D. enough
6. A wind turbine......................in our garden next year.
   A. install                        B. installed                   C. will installed             D. will be installed
7. Biogas is.....................and cheap for cooking and heating.
   A. plenty                        B. abundant                 C. serious                    D. expensive.
8. A hydropower station...................in the North of the country next year.
   A. was built                    B. were built                C. will be built               D. has been built
9. We should put.................on our roof for the heating and hot water.
   A. solar energy              B. equipment               C. cracks                      D. solar panels
10. Remember to.....................the lights before going to bed.
   A. turn                            B. turn off                     C. turn on                     D. stop