Don’t forget to ________ the lights when leaving a room or going to bed.

A. turn​B. turn on​​C. turn off​D. turn out

What should we do to __________ our electric bills?

A. fall​​B. cut down​​C. drop​D. reduce

The use of biogas for cooking _______ in the countryside.

A. will increase​B. will be increasing​​C. will be increased​​D. will have increased

We will be successful if we try hard, _____?  

A. don't we ​​B. will we ​​C. won't we ​​D. do we 

With the Segway, the driver pulls the handle to go back or pushes it to go​.

​A. forward​B. backward​C. round​D. fly

The city is working on a project ________ slums with clean water.

A. providing​​B. provide​​C. to provide​D. to providing

In that country, over 30% of the population live in ________.

A. poor​B. poorer​​C. poverty​D. the poor

 Children who ________ malnutrition can have a lot of diseases.

A. suffer from​​B. avoid​​C. gain​D. obtain

There are more problems in the slums than in the ________ areas.

A. wealth​B. richness​​C. wealthy​D. country

___ is quite popular in an overcrowded city where you can see people sleeping in a park or under a bridge.

A. Homeless​​B. The homeless​​C. Homelessly​D. Homelessness

"Life must be very difficult with homeless people."

“_____. They have to face many problems beyond the lack of a suitable home." 

A. Not really. ​B. No doubt. ​​C. Of course not. ​D. Not at all.

1A

2B

3B

4D

5C

6C

7C

8A

9C

10B

11B

mình ko chắc chắc chắn vài câu nhé

 Don’t forget to ________ the lights when leaving a room or going to bed.

A. turn​B. turn on​​C. turn off​D. turn out

What should we do to __________ our electric bills?

A. fall​​B. cut down​​C. drop​D. reduce

The use of biogas for cooking _______ in the countryside.

A. will increase​B. will be increasing​​C. will be increased​​D. will have increased

We will be successful if we try hard, _____?  

A. don't we ​​B. will we ​​C. won't we ​​D. do we 

With the Segway, the driver pulls the handle to go back or pushes it to go​.

​A. forward​B. backward​C. round​D. fly

The city is working on a project ________ slums with clean water.

A. providing​​B. provide​​C. to provide​D. to providing

In that country, over 30% of the population live in ________.

A. poor​B. poorer​​C. poverty​D. the poor

 Children who ________ malnutrition can have a lot of diseases.

A. suffer from​​B. avoid​​C. gain​D. obtain

There are more problems in the slums than in the ________ areas.

A. wealth​B. richness​​C. wealthy​D. country

___ is quite popular in an overcrowded city where you can see people sleeping in a park or under a bridge.

A. Homeless​​B. The homeless​​C. Homelessly​D. Homelessness

"Life must be very difficult with homeless people."

“_____. They have to face many problems beyond the lack of a suitable home." 

A. Not really. ​B. No doubt. ​​C. Of course not. ​D. Not at all.

1. The wind, the sun, and the wave are some types of __________ sources of energy.
A. changeable    B. alternative    C. cheap        D. costly
2. Remember to __________ the lights before going to bed.
A. turn        B. turn on        C. turn off        D. stop
3. People will reduce energy __________ as much as possible.
A. consume        B. consumption    C. expense        D. expenses
4. Nuclear power is expensive and dangerous __________ our environment.
A. for            B. to            C. in            D. with
5. Human is looking for a clean, cheap and __________ sources of energy.
A. effective        B. effect        C. effectively    D. effectiveness
6. Low energy light bulbs should be used to __________ electricity.
A. spend        B. buy        C. convert        D. save
7. We must __________ the amount of water our family used every day.
A. lower        B. reduce        C. lessen        D. narrow
8. At this time next month we __________ to Ha Long Bay for a holiday.
A. will go        B. will going    C. will be gone    D. will be going
9. By the middle of the 21st century, people in developing countries __________ more renewable energy.
A. uses        B. will be using    C. used        D. have
10. Fossil fuels are very common in our society but they __________ the environment.
A. renew        B. provide        C. waste        D. pollute
11. 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
12. In India, the demand for __________ has always been more than the supply.
A. shortage        B. sources        C. slogan        D. electricity
13. __________ energy is produced by collecting sunlight and converting it into electricity.
A. Hydro        B. Nuclear        C. Solar        D. Wind
14. There are many available __________ power sources in Vietnam including sun, wind, water, etc.
A. nuclear        B. hydro        C. renewable    D. solar

15. Laos and Cambodia have big plans for building up to 11__________ on the lower Mekong.
A. dams        B. slogans        C. energy        D. coals
16. __________ can be an excellent source of free, renewable energy for poor farmers.
A. Turbine        B. Biogas        C. Solar panel    D. Bulb
17. The government has warned that Britain will face power __________ in the coming winters.
A. coal        B. shortages        C. slogans        D. energy
18. Wind power is one of the earliest __________ sources of energy used by humankind.
A. alternative    B. polluted        C. harmful        D. exhausted
19. 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
20. Biogas can be used to __________ natural gas in cooking, heating, or electrical generation.
A. use up        B. replace        C. pollute        D. install
21. At this time next week we__________ to work to support the air pollution cutting down campaign.
A. are cycling    B. will be cycling    C. will cycle        D. will be cycled
22. Someone’s carbon__________ is a measurement of the amount of carbon dioxide that their activities produce.
A. footprint        B. energy        C. effect        D. amount
23. Remember to__________ the lights before going to bed.
A. turn on        B. stop        C. turn        D. turn off
24. We will cut down in the use of natural gas because it is    __________ and harmful to the environment.
A. available        B. abundant        C. plenty        D. limited
25. Hydro power is__________ because dams cannot be built in certain areas.
A. abundant        B. enough        C. limited        D. unlimited
26. __________ source of energy is the source that can’t be replaced after use.
A. Effective        B. Non-renewable    C. Renewable    D. Natural
27. Which of the following is NOT renewable source of energy?
A. wind        B. coal        C. hydro        D. solar
28. We are looking for cheap, clean and__________ sources of energy.
A. serious        B. dangerous    C. effective        D. efficient

29. By the middle of the 21st century, people in developing countries__________ more renewable energy.
A. used        B. have used        C. uses        D. will be using
30. If we go on__________ electricity, we will have to pay a lot next month.
A. turning on     B. widened        C. wasting        D. increasing
31. Biogas is__________ and cheap for cooking and heating.
A. serious        B. expensive    C. plenty        D. abundant
32. We should put__________ on our roof for the heating and hot water.
A. equipment    B. cracks        C. solar energy    D. solar panels
33. In many countries, people think that electricity, gas and water are not luxuries but__________.
A. necessities    B. appliances    C. sales        D. consumers
34. We should use    light bulbs in our homes.
A. a bit energy    B. efficient        C. low energy    D. little energy
35. A hydropower station__________ in the North of the country next year.
A. will be built    B. has been built    C. was built        D. were built
36. Nuclear energy is__________, but it is dangerous.
A. renewable    B. non-renewable    C. natural resource    D. fossil fuel
37. Fossil fuels are very common in our society but they__________ the environment.
A. waste        B. pollute        C. renew        D. provide
38. All the houses in our village will be__________ by solar energy.
A. frozen        B. widened        C. heated        D. heightened
39. Several governments try to__________ the use of fossil fuels.
A. waste        B. save        C. reduce        D. increase
40. At this time next week, we__________ a wind turbine in our garden.
A. will installed                B. will be installing    
C. install                    D. installed
41. Low energy light bulbs should be used to__________ electricity.
A. convert        B. save        C. spend        D. buy
42. It is a good idea to use__________ when travelling long distances.
A. private cars    B. public transport    C. cars        D. taxis
43. “Why is it called a__________ source?” - “Because it can be replaced easily and quickly.”
A. renewable    B. non-renewable    C. effective        D. specific
44.    We must__________ the amount of water our family use every day.
A. lessen        B. narrow        C. lower        D. reduce
45. Wave energy is a source of__________ energy.
A. environmental friendly        B. environmentally friendliness
C. environment friendly            D. environmentally friendly
46. Alternative sources of energy__________ developed in the near future.
A. has been        B. will be        C. is            D. was
47. She__________ cooking in the kitchen at 7 PM tomorrow.
A. will        B. is            C. will be        D. be
48. Some new energy-saving bulbs__________ in the dining room.
A. will be put    B. will put be    C. will put        D. will be putting
49. What should we do to        electricity?
A. take        B. save        C. cut            D. waste
50. The wind, the sun, and the wave are some types of __________ sources of energy.
A. cheap        B. costly        C. changeable    D. alternative

1. Don't forget to turn off the light before going out

1. They last went to London in 2014

=> They have not gone to London since 2014.......

2. We had our vaccinations nearly three weeks ago.

=> It is nearly three weeks since we last have our vaccinations .......

3. "Remember to turn off the lights before going out." said my sister.

=> My sister reminded me to turn off the lights before going out......

4. It is believed that prevention is better than cure.

=> Prevention is believed to be better than cure.........

C

C

C

Chọn D

electricity (n): điện

electrify (v): truyền điện

electric (a): có tính điện

electrically (adv)

save electricity: tiết kiệm điện

Tạm dịch: Bạn nên tắt đèn trước khi đi ra ngoài để tiết kiệm điện.

Remember to turn off the lights before you......

a,will leave   b,will be leaving   c,leave   d,are leaving

mk nghĩ  là 

Remember to turn off the lights before you......

a,will leave   b,will be leaving   c,leave   d,are leaving

The problem of waste energy is a big problem. Many people don't know about how to save energy, so I want to tell them. The first, we should save electricity such as: turn off the light before going bed or going out, keep the door fridge closed,...The second, we should save water such as: turn off the faucet after using or take a short shower instead of bad,...The third, we should save the gas such as: prepare food carefully before turning on the gas cooker or go to school by bus instead of go by motorbikes or cars,...So we should learn about how to save energy or useing energy reasonable.