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1. What should we do to _________ electricity ?
A. cut B. take C. save D. waste
2. Fossil fuels are very common in our society but they _________ the evironment.
A. renew B. provide C. waste D. pollute
3. Wave energy is a source of _________ energy.
A. environment friendly B. environmentally friendly
C. environmental friendly C. environmentally friendliness
4. Biogas is ______ and cheap for cooking and heating.
A. plenty B. abundant C. serious D. expensive
1. What should we do to _________ electricity ?
A. cut B. take C. save D. waste
2. Fossil fuels are very common in our society but they _________ the evironment.
A. renew B. provide C. waste D. pollute
3. Wave energy is a source of _________ energy.
A. environment friendly B. environmentally friendly
C. environmental friendly C. environmentally friendliness
4. Biogas is ______ and cheap for cooking and heating.
A. plenty B. abundant C. serious D. expensive

1.By the middle of the 21st century, people in developing countries ___ more renewable energy.
A. uses B. will be using C. used D. have used
2. The wind, the sun and the wave are some types of ___ sources of energy.
A. changable
B. alternative
C. cheap
D. costly
3. Alternative soures of energy ___ developed in the near future.
A. is
B. was
C. has been
D. will be
4. Fossil fuels are very common in our society but they ___ the environment.
A. renew
B. provide
C. waste
D. pollute
5. "Why is it called a ___ source?" - "because it can be replace easily and quickly"
A. effective
B. specific
C. renewable
D. non-renewable
6. Hydro power is ___ because dams connot be built in certain areas.
A. limited
B. unlimited
C. abundant
D. enough
7. At this time next week, we ___ a wind turbine in our farden.
A install
B. installed
C. will installed
D, will be installed
8. Biogas is ___ and cheap for cooking and heating
A. plenty
B. abundant
C, serious
D. expensive
9. 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
10. We should put ___ on our roof for the heating and hot water.
A. solar energy
B. equipment
C. cracks
D. solar panels
11. Remember to ___ the lights before going to bed.
A turn
B, turn off
C, turn on
D, stop
12. it is a good idea to use ___ when travelling long distances.
A cars
B taxis
C. private cars
D. public trans prot
13. What should we do to ___ electricity?
A. cut
b. take
c,save
d, waste
14. we shout use ___ light bulbs in our homes
a, low energy
B. little energy
c, a nit energy
d, efficient

I. Choose the best answer (A, B, C or D).
1.By the middle of the 21st century, people in developing countries____ more renewable energy.
A. uses B. will be using C. used D. have used
2. The wind, the sun, and the wave are some types of ____________ sources of energy.
A. changeable B. alternative C. cheap D. costly
3. Alternative sources of energy ____________ developed in the near future.
A. is B. was C. has been D. will be
4. Fossil fuels are very common in our society but they ____________ theenvironment.
A. renew B. provide C. waste D. pollute
5. “Why is it called a _____________ source?” – “Because it can be replacedeasily and quickly.”
A. effective B. specific C. renewable D. non-renewable
6. Hydro power is _____________ because dams cannot be built in certainareas.
A. limited B. unlimited C. abundant D. enough
7. At this time next week, we ______________ a wind turbine in our garden.
A. install B. installed C. will installed D. will be installing
8. Biogas is ____________ and cheap for cooking and heating.
A. plenty B. abundant C. serious D. expensive
9. A hydropower station ______________ in the North of the country nextyear.
A. was built B. were built C. will be built D. has been built
10. We should put ___________ on our roof for the heating and hot water.
A. solar energy B. equipment C. cracks D. solar panels
II. Change the following sentences in to the Passive Voice.
1. Scientists will find solutions to reduce pollution in our city.
=> Solutions to reduce pollution in our city will be found by scientists
2. Governments will make more regulations to reduce industrial pollution.
=> More regulations to reduce industrial pollution will be made by goverments
III. Use the cues given to write correct sentences.
1.=> Solar panels are placed on the roof of a house and the sun's energy is used to heat water .
2. The energy/ store/ a number of days.
-> The energy can be stored in a number of days
3. Car/ use solar energy/ gas/ by the year 2030.
=>Car will be used solar energy instead of gas by the year 2030.

IV . Choose the correct answers :
1. Remember to ....... the lights before going to bed .
A. turn B.turn off C.turn on D. stop
2. Biogas is .......... and cheap for cooking and heating .
A. dangerous B. abundant C. serious D. expensive
3. 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
4. At this time next week , we ..... a wind turbine in our garden .
A. install B. installed C. will install D. will be installing
5. Fossil fuels are very common in our society but they ........ the environment .
A. renew B. provide C. waste D. pollute
6. Hydro power is ......... because dams cannot be built in certain areas .
A. limited B. unlimited C. abundant D. enough
7. Why is it called a ..... source - Because it can be replaced easily and quickly .
A. effective B. available C. renewable D. non - renewable
8. Wave energy is a source of ........ energy .
A. environment friendly
B. environmentally friendly
C. environmental friendly
D. environmental friend

1. _T__ Many people in Calcutta live in bad conditions because they have no jobs.
2. _T__ Babies from poor families are taken care of by the local government.
3. _F__ Seventy percent of the families in Calcutta have to live in the streets.
4. _F__ The local government makes effects to help poor families but it cannot solve the problem
successfully.
5 .__T_ Many people in Calcutta live in good conditions because they have no jobs.
6. _F_ Babies are born in the street.
7. __F_ Many people are sick because they don’t have enough money to live.

III.Rewrite the sentences so that they have the same meaning as the original ones.
1. I couldn’t sleep. I was tired. (in spite of)
=>in spite of being tired ,i couldn't sleep
2. They have little money. They are happy (despite)
=>despite having little money,they are happy
3. We had planned to walk right round the lake. The heavy rain made this impossible. (although)
=>Although We had planned to walk right round the lake, The heavy rain made this impossible
4. I got very wet in the rain. I had an umbrella. (although)
=>Although I had an umbrella,I got very wet in the rain
IV. Choose the word which has a different stress pattern from the others.
1. A. hotel B. chimney C. future D. petrol
2. A. population B. uncomfortable C. overcrowded D. celebration
3. A. peaceful B. wealthy C. diverse D. labour
4. A. direct B. affect C. open D. renew
5. A. succeed B. happen C. replace D. attend
6. A. reward B. country C. samba D. music
7. A. helicopter B. entertainment C. superstitious D. documentary
8. A. perform B. order C. receive D. rehearse
V.Complete the following passage by choosing the best option, A, B, C or D.
Energy is very important in our modern life. People use energy (1)__________ transportation, cooking, heating and cooling rooms, manufacturing, lighting, and entertainment. (2) __________ energy nowadays comes from fossil fuels – petroleum, coal, and natural gas. (3) __________, burning fossil fuels causes pollution. Also, if we don’t find new kinds of energy, we will (4) __________ all the fossil fuels in the near future.
1.A. in B. for C. at D. by
2.A. Most B. Mostly C. almost D. Utmost
3.A Because B. Moreover C. Therefore D. However
4.A. use up B. run on C. take over D. cut off
pollute
pollute