1. When you save energy, you not only save money, you also reduce the demand for _________ such as coal, oil, and natural gas and that is a great way to play a part in saving the planet.

A. carbon footprint              B. electricity  C. fossil fuels                        D. biogas

2. In India, the demand for ___________ has always been more than the supply.

A. shortage                            B. sources      C. slogan                    D. electricity

3. ___________ energy is produced by collecting sunlight and converting it into electricity.

A. Hydro                                B. Nuclear     C. Solar                      D. Wind

4. There are many available ________ power sources in Vietnam including sun, wind, water, etc.

A. nuclear                              B. hydro         C. renewable             D. solar

5. Laos and Cambodia have big plans for building up to 11 ___________ on the lower Mekong.

A. dams                                  B. slogans      C. Energy                   D. coals

6. ___________ can be an excellent source of free, renewable energy for poor farmers.

A. Turbine                             B. Biogas       C. Solar panel                       D. Bulb

7. The government has warned that Britain will face power ___________ in the coming winters.

A. coal                                                B. shortages               C. slogans                  D. energy

8. Wind power is one of the earliest ___________ sources of energy used by humankind.

A. alternative                                    B. polluted                 C. harmful                 D. exhausted

9. Nobody can predict exactly when supplies of fossil fuels will be ___________. However, we all know they quickly reduce in quantity.

A. installed                            B. polluted                 C. harmful                 D. exhausted

10. Biogas can be used to ___________ natural gas in cooking, heating, or electrical generation.

A. use up                                B. replace                  C. pollute                   D. install

11. Solar energy can be used for ___________ electricity, and for hot water heating.

A. investing                           B. polluting               C. generating             D. installing

12. The non-renewable sources of energy that we are using are ___________ and are bound to expire one day.                 A. limited       B. plentiful                C. abundant   D. alternative