2. Rearrange the groups of words to make complete sentences

1. She / appliances / electrical / when  / not using them. / turns off 

à.............................................................................................................................
2. we / Renewable / can / means / replace / easily / them.

à.............................................................................................................................

3.  means of  / will be / public transport / faster / more convenient. / New / and

à.............................................................................................................................

4. fast, / and  / A teleporter / safe / is also / eco-friendly.

à ............................................................................................................................

5. consists / New Zealand / of  /and / the North Island / the South Island.

à..........................................................................................................................................

Saving energy doesn’t have to be expensive or time consuming. But what can you do to save energy? There is (51.) _____________ that you can do to help the process of energy conservation. You can save energy by doing things like making sure that the kettle doesn’t (52.) ______________ more water than is needed, always washing a full load in the washing machine rather than a half load or turning down your central heating by 1oC – this could cut your (53.) __________ bill by 10%.

Making sure that hot water taps are not left (54) __________ and replace washers if your taps drip. (55.) __________ work you can turn off (56.) _____________ lights and your computer if you are not using them. (57.) ___________ to energy saving light bulbs – these use around a quarter of the electricity, and often last eight times (58.) __________ than an ordinary bulb. Close your curtains at (59.) __________ to keep the warm air from escaping through the windows. Switching off (60.) __________ appliances when they are not in use makes a big contribution to energy saving too.

51. A. plenty B. lot C. little D. few
52. A. consist B. contain C. compose D. include
53. A. hot B. heat C. heating D. heated
54. A. run B. ran C. running D. flowing
55. A. By B. At C. In D. On
56. A. any B. all C. those D. no
57. A. Change B. Consume C. Buy D. Sell
58. A. higher B. shorter C. less D. more
59. A. morning B. evening C. dusk D. afternoon
60. A. electricity B. electronic C. electric D. electrical

II. Circle the best answer to complete each sentence

  1. We should reduce the use of _________ at home.

      A. electric                         B. electricity                           C. electrical                             D. electrify

  2. Waves will be used as an ___________ sources of energy.

      A. environmentally-friendly                                            B. environmental friend

      C. environment-friendly                                                  D. friendly environment

  3. What will happen if we ________ of non-renewable energy resources?

      A. exhaust                         B. run up                                 C. run out                                D. use up

  4. I hope scientists will come up with a __________ to the shortage of energy on Earth.

      A. cause                             B. result                                  C. way                                     D. solution

  5. Geothermal energy can be found in only some places of the earth. It comes from depth ______ the earth

      A. under                            B. inside                                  C. indoor                                 D. in

  6. Most energy nowadays comes from fossil fuels such as oil, coal, and natural gas. _________, burning fossil fuels causes pollution.

       A. Although                      B. But                                      C. However                             D. Despite

  7. We should place                on our roof for the heating and hot water.

       A. solar energy                B. equipment                         C. cracks                                 D. solar panels

  8. Nuclear power is not only expensive _________ dangerous to our environment.

      A. and                                B. but                                      C. but also                               D. enough

  9. At this time next week, people                another hydro plant in Dak Lak province.

      A. will be building             B. are building                        C. will building                       D. will build

  10. In the middle of the 21^st century, people in _________ countries will be using more renewable energy.

      A. developed                     B. developing                         C. underdeveloping               D. underdevelop

  11. I think that solar energy can be an ____________ source of energy in the near future worldwide.

      A. changeable                   B. non-renewable                  C. alternative                          D. new

  12. Sunlight is __________ into electricity by each solar cell in the panels.

       A. changed                       B. exchanged                          C. switched                             D. turned

  13. Energy sources are classified into two groups - renewable and nonrenewable.

       A. categorized                  B. catalogued                         C. identified                            D. regarded

  14. What ________if  carbon dioxide levels continue to increase?

       A. happens                         B. will happen                        C. will be happening              D. happen

  15. Carbon footprint is the __________ of carbon dioxide we produce with any action or activity.

 A. number                       B. quality                                C. amount                               D. level

1 It's a good idea to switch off electrical appliances when they aren't in use               ⇒ You                                                                                                                          2 Biogas wil be used for fuel in homes and for transport                                         ⇒ People                                                                                                                   

1 they want us ..............our classroom more atractively a decorate b to decorate c decorating d decorated 2 i wear a hat ..................... i do not want to be sick a but b and c about d of 3 what can we do to spend less .....................lighting ? a in b on c about d of 4 many new air conditioners will ......................... this morning a be installed b be sold c be cleaned d all are correct 5 we should ..........................all the electric appliances when leaving our room a turn off b turning off c turn on d turning on 6 she told me she ....................... go to ha noi the following day a has to b had to c will have to d would have to 7 everyone should ...................forest and environment a reduce b prevent c protect d wash 8 we were very ..................... that you won the first prize a amaze b amazed c amazing d amazenment 9 if a disaster ...................... in an area , people from other areas will offer help a happens b will happen c happening d would happen