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14 tháng 2 2020

Use the given words to write meaningful sentences. Do not reorder the words/phrases.

1. If/ I/ you/ I/ plant/ vegetables/ garden.

If I were you, I would plant vegetables in the garden.

2. What / happen/ if/ there/ no cars/ world?

What would happen if there were no cars in the would?

3. Researchers/ have/ find out/ what/ has/ lead to /pollution/ the river.

The researchers have found out what has led to make the polluion to the river.

4. Many animals/ eat/ litter/ become/ sick/ because/ people/ throw / them / ground.

Many animals eat litter and become sick because people throw it on the ground.

14 tháng 2 2020

Thank nha

1 Combine each pair of the following sentences using the words / phrases in brackets. 1. A serious road accident happened. There was a traffic chaos yesterday. (CAUSED) ____________________________________________________________________ 2. I had to get the mop. I spilled my juice. (SINCE) ____________________________________________________________________ 3. He walked slowly. He has a bad leg. (BECAUSE OF) ...
Đọc tiếp

1 Combine each pair of the following sentences using the words / phrases in brackets.

1. A serious road accident happened. There was a traffic chaos yesterday. (CAUSED)

____________________________________________________________________

2. I had to get the mop. I spilled my juice. (SINCE)

____________________________________________________________________

3. He walked slowly. He has a bad leg. (BECAUSE OF)

____________________________________________________________________

4. A peacock will spread his feathers. He will attract a female. (SO)

____________________________________________________________________

5. The cyclone has come. Many thousands of deaths. (RESULTED IN)

____________________________________________________________________

6. Don't eat too much sugar. It creates health problems. (LEAD TO)

____________________________________________________________________

7. The weather was bad. That's why our departure delayed. (BECAUSE OF)

____________________________________________________________________

8. There was damage to our property because of the fire. (RESULTED IN)

____________________________________________________________________

9. They haven't reply our invitation so far. I think they are not coming. (SINCE)

____________________________________________________________________

10. The road condition is poor. There has been several accidents. (CAUSED)

____________________________________________________________________

2 Use the given words to write the complete conditional sentences type 2.

1. If / I / be / you / I / eat / more vegetable.

____________________________________________________________________

2. More / foreign tourists / come / here / if / environment / clean.

____________________________________________________________________

3. What / happen / if / there / be / no woman / world?

____________________________________________________________________

4. If / I / be / his father / I / ask / him / learn English / better.

____________________________________________________________________

5. If / there / be / no war / earth / people / live / peace / forever.

____________________________________________________________________

6. Flood / not happen / so regularly / if / people / not cut down / so many / tree.

____________________________________________________________________

7. If / they / tell / their father / he / be / very angry.

____________________________________________________________________

8. She / spend / a year / USA / if / it / be / easy / get / green card.

____________________________________________________________________

9. If / I / live / lonely island / I / be / very sad all day.

____________________________________________________________________

10. My brother / buy / sport car / if / he / have / money.

____________________________________________________________________

4
20 tháng 2 2020

1. If I were you, I would eat more vegetable

2. More foeign tourists would come here if the enviroment were clean

3. What would happen if there were no woman in the world?

4. If I were his father, I would ask him to learn E better

5. Food wouldn't happen so regularly if people didn't cut down so many trees

7. If they told their father, he would be very angry

8. She would spend a year in The USA if it were easy to get a green card

9. If i lived loney on a island, i would be very sad all day

10. My brother would buy a sport car if he had money

2,

20 tháng 2 2020

mình giải bài 2 nha bạn

20 tháng 2 2019

Make conditional sentences type 2 from the clues.

1. If/ be/ you/, I/ plant/ vegetables/ garden.

If I were you , I would plant vegetables in the garden

2. More/ tourist/ come/ here/ if/ beach/ be/ cleaner.

More tourist would come here if the beach were cleaner

3. What/ happen/ if/ there/ be/ no/ car/ world?

What would happen if there were no cars in the world ?

4. If/ I/ be/ his mother/, I/ ask/ tidy/ room/ every day.

If I were his mother , I would ask him to tidy his room every day

5. If/ there/ be/ no/ war/, people/ live/ more/ happy.

If there were no war , people would live more happily

6. Soil/ not/ be/ so/ polluted/ if/ farmers/ not use/ much/ chemical/ fertilizer.

Soild wouldn't be so polluted if farmers didn't use much chemical fertilizer.

#Yumi

*Combine each pải ò sentences, using the words givenl. People eat dirty food. They can be cancer. (If)_______________________________________________________________________________2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river ispolluted. (If)_______________________________________________________________________________3. Farmers use polluted water to water their plants. People eat these plants, they become sick withdiseases such as...
Đọc tiếp

*Combine each pải ò sentences, using the words given

l. People eat dirty food. They can be cancer. (If)

_______________________________________________________________________________

2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is

polluted. (If)

_______________________________________________________________________________

3. Farmers use polluted water to water their plants. People eat these plants, they become sick with

diseases such as diarrhea, bacterial inflections even cancer. (If)

_______________________________________________________________________________

4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase

or decrease suddenly. (If)

_______________________________________________________________________________

5. People live in radioactive pollution area. They can be skin cancer. (If)

_______________________________________________________________________________

6. One effect of global warming is that sea levels are rising. The polar icecaps are melting. (because)

_______________________________________________________________________________

7. The global population has increased. There are much better levels of nutrition. (because of)

_______________________________________________________________________________

8. Nuclear explosions and detonations of nuclear weapons cause radioactive pollution. (lead to)

_______________________________________________________________________________

9. More and more roads are being built. Air pollution is rising. (as a consequence)

_______________________________________________________________________________

10. The fish and other aquatic animals have died. The water is polluted. (due to)

_______________________________________________________________________________

0
26 tháng 10 2019

1. will have

2. will die

3. shines

4. reduced/would be

5. don't read/won't know

6. were/would remove

7. will have/listens

22 tháng 2 2020

1. If the local people drink the contaminated water, they will have health problems.

2. All the aquatic animals will die if people don't stop dumping sewage into the lake.

3. If the sun shines, we will walk to the mountain.

4. People use a lot of cars and motorcycles. If people reduced the use of motor vehicles, there would be less serious air pollution.

5. If you don't read these articles, you won't know the facts about water pollution.

6. If I were the president, I would remove all the factories out of the city.

7. Your brother will have hearing problems if he listens to too loud music.

Bài 1: Điền các từ sau vào chỗ trống: substance, light pollution, Earth's surface, water temperture, dumping poison, poisonous, waste, acid, surprised, air pollution 1. If this factory continues ___ into the lake, all the fish and other aquatic animals will die. 2. I thinks there is ___ around here because all trees and plants turn yellow and dry. 3. When thermal pollution happens, the _____ in rivers, lakes and oceans changes. 4. Soil pollution happens when people destroy the...
Đọc tiếp

Bài 1: Điền các từ sau vào chỗ trống:

substance, light pollution, Earth's surface, water temperture, dumping poison, poisonous, waste, acid, surprised, air pollution

1. If this factory continues ___ into the lake, all the fish and other aquatic animals will die.

2. I thinks there is ___ around here because all trees and plants turn yellow and dry.

3. When thermal pollution happens, the _____ in rivers, lakes and oceans changes.

4. Soil pollution happens when people destroy the ____.

5. Poison is a ____ that can make people or animals ill or kill them if they eat or drink it.

6. They are all ____ to see that all the fish they grow on thier farm are dead.

7. You can see stars at night in the countryside because there isn't any ______ there.

8. Many households around the West Lake dump _____ into it so the water is polluted.

9. The vegetable price is increasing because the _____ rain has caused damage to almost vegetables in this area.

10. The _____ chemical waste in this factory is dumped into the river so its water now becomes almost black.

Bài 2: Chọn từ đúng và trả lời câu hỏi:

A plastic problem

Nowadays, people use a lot of plastic bags and they often (1) throw/ away/ bury the bags afterwards. They don't often (2) pollute/ reuse or (3) waste/ recycle them. When we (4) destroy/ reuse plastic, we pollute the lands or air. It isn't a good idea to (5) burn/ poison plastic because it (6) poisons/ saves the atmosphere. The alternative is to (7) bury/ pollute it, but some plastic doesn't decompose for over a thousand years.

Questions:

8. Do you throw away or reuse plastic bags?

9. What do you and your school do with rubbish?

10. What things are harmful to the environment in your area?

Help me!!!

2
3 tháng 2 2018

Bài 1: Điền các từ sau vào chỗ trống:

substance, light pollution, Earth's surface, water temperture, dumping poison, poisonous, waste, acid, surprised, air pollution

1. If this factory continues dumping poison into the lake, all the fish and other aquatic animals will die.

2. I thinks there is air pollution around here because all trees and plants turn yellow and dry.

3. When thermal pollution happens, the water temperture in rivers, lakes and oceans changes.

4. Soil pollution happens when people destroy the Earth's surface .

5. Poison is a substance that can make people or animals ill or kill them if they eat or drink it.

6. They are all surprised to see that all the fish they grow on thier farm are dead.

7. You can see stars at night in the countryside because there isn't any light pollution there.

8. Many households around the West Lake dump waste into it so the water is polluted.

9. The vegetable price is increasing because the acid rain has caused damage to almost vegetables in this area.

10. The poisonous chemical waste in this factory is dumped into the river so its water now becomes almost black.

Bài 2: Chọn từ đúng và trả lời câu hỏi:

A plastic problem

Nowadays, people use a lot of plastic bags and they often (1) throw away/ bury the bags afterwards. They don't often (2) pollute/ reuse or (3) waste/ recycle them. When we (4) destroy/ reuse plastic, we pollute the lands or air. It isn't a good idea to (5) burn/ poison plastic because it (6) poisons/ saves the atmosphere. The alternative is to (7) bury/ pollute it, but some plastic doesn't decompose for over a thousand years.

Questions:

8. Do you throw away or reuse plastic bags?

- I throw away plastic bags

9. What do you and your school do with rubbish?

- We recycle and reuse them

10. What things are harmful to the environment in your area?

- They are garbage , plastic bags , plastic bottles , cans and excess packaging

3 tháng 2 2018

Mêń Vũ, Anh Ngốc, phương linh, Nguyễn Nhật Minh, Học 24h, nguyen thi anh thu, Hoàng Hạnh Nguyễn, Huyền Tống Khánh, Công chúa ánh dương, Chippy Linh, Quỳnh Nhi, Nguyễn Công Tỉnh, bơ đi mà sống, An Trần, Song Ji Hyo, Brown Bae, Xuân Dinh, Linh Diệu, Tú Quyên, ...

1. If we (recycle) _____ more, we will help the Earth. 2. Factories (not dump) _____ waste into rivers if the government fines them heavily. 3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school. 4. If light pollution ______ (happen), animals will change their behaviour patterns. 5. If people (travel) _____ to work by bus, there will be fewer car fumes. 6. We _____ (save) thousands of trees if we don’t waste paper. 7. If we use...
Đọc tiếp

1. If we (recycle) _____ more, we will help the Earth.

2. Factories (not dump) _____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school.

4. If light pollution ______ (happen), animals will change their behaviour patterns.

5. If people (travel) _____ to work by bus, there will be fewer car fumes.

6. We _____ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _____ (have) fresh water.

8. The level of radioactive pollution will decrease if we _____ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) _____, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) _____ contaminated.

11. If you (be) _____ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) _____ more, they (be) _____ healtheir.

13. If I had one million US dollars, I (build) _____ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) _____ her room everyday, her mother (not be) _____ so upset.

15. There isn’t a garden at our house. If there (be) _____, we (grow) _____ vegetables.

16. It (not be) _____ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) _____ less snow.

18. If I (be) _____ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) _____ big changes in the future.

20. How _____ you _____ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) _____ any flowers if my sister (not take care) _____ it every day.

22. If pigs (have) _____ wings, _____ (they/be able) to fly?

23. If I _____ (be) an astronaut, I _____ (travel) to other planets.

24. If you _____ (not see) Tom ever again, how _____ (you/feel)?

25. What _____ (you/do) if you _____ (see) a ghost?

26. If you _____ (eat) more of this cake, you _____ (be) sick. You’ve already had five slices!

27. Who _____ (you/vote) for if you _____ (be) eighteen?

28. If you _____ (be) late, we _____ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we _____ (suffer) from excessive ultraviolet radioation.

30. If you _____ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution _____ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land _____ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you _____. (not smoke)

34. If it is sunny, we _____ a clean-up of the garden. (do)

35. If local residents _____ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _____ flowers all year round. (have)

37. If man _____ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she _____. (not come)

39. If everyone _____ a small contribution, we’ll be able to do a good cause. (make)

1
21 tháng 2 2020

bạn tham khảo nhé https://hoc24.vn/hoi-dap/question/777127.html

Complete the second sentences so that it has a similar meaning to the first one. Use the words or phrases given. Do not change the word given. (5pts) 1. Would you like to play a game of tennis now? FANCY  Do _______________________________________________________________tennis now? 2. “You had better watch other people first, and then follow them.” My sister said ADVISED  My sister________________________________________________________________them. 3. If I...
Đọc tiếp

Complete the second sentences so that it has a similar meaning to the first one. Use the words or phrases given. Do not change the word given. (5pts)
1. Would you like to play a game of tennis now? FANCY
 Do _______________________________________________________________tennis now?
2. “You had better watch other people first, and then follow them.” My sister said ADVISED
 My sister________________________________________________________________them.
3. If I could play for the National team. That’s what I would like to do. OPPORTUNITY
 If I ____________________________________ so, I would like to play for the National team.
4. My classmate said to me that he didn’t want to join in our camping trip to the mountains. RATHER
 My classmate said that _________________________________________ to the mountains.
5. Read as many books as you can, and you may get more knowledge than any other activities. MORE
 The more books you read, ________________________________________________ you may get.

2
1 tháng 3 2020

1. Do you fancy playing a game of tennis now?

1 tháng 3 2020

2. My sister advised me to watch other people first, and then follow them

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2) 1. If we (recycle) _____ more, we will help the Earth. 2. Factories (not dump) _____ waste into rivers if the government fines them heavily. 3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school. 4. If light pollution ______ (happen), animals will change their behaviour patterns. 5. If people (travel) _____ to work by bus, there will be fewer...
Đọc tiếp

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2)

1. If we (recycle) _____ more, we will help the Earth.

2. Factories (not dump) _____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers _____ (teach) environmental issues at school.

4. If light pollution ______ (happen), animals will change their behaviour patterns.

5. If people (travel) _____ to work by bus, there will be fewer car fumes.

6. We _____ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _____ (have) fresh water.

8. The level of radioactive pollution will decrease if we _____ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) _____, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) _____ contaminated.

11. If you (be) _____ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) _____ more, they (be) _____ healtheir.

13. If I had one million US dollars, I (build) _____ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) _____ her room everyday, her mother (not be) _____ so upset.

15. There isn’t a garden at our house. If there (be) _____, we (grow) _____ vegetables.

16. It (not be) _____ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) _____ less snow.

18. If I (be) _____ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) _____ big changes in the future.

20. How _____ you _____ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) _____ any flowers if my sister (not take care) _____ it every day.

22. If pigs (have) _____ wings, _____ (they/be able) to fly?

23. If I _____ (be) an astronaut, I _____ (travel) to other planets.

24. If you _____ (not see) Tom ever again, how _____ (you/feel)?

25. What _____ (you/do) if you _____ (see) a ghost?

26. If you _____ (eat) more of this cake, you _____ (be) sick. You’ve already had five slices!

27. Who _____ (you/vote) for if you _____ (be) eighteen?

28. If you _____ (be) late, we _____ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we _____ (suffer) from excessive ultraviolet radioation.

30. If you _____ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution _____ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land _____ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you _____. (not smoke)

34. If it is sunny, we _____ a clean-up of the garden. (do)

35. If local residents _____ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _____ flowers all year round. (have)

37. If man _____ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she _____. (not come)

39. If everyone _____ a small contribution, we’ll be able to do a good cause. (make)

1
19 tháng 2 2019

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2)

1. If we (recycle) __recycle___ more, we will help the Earth.

2. Factories (not dump) _won't dump____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers __teach___ (teach) environmental issues at school.

4. If light pollution ___happens___ (happen), animals will change their behaviour patterns.

5. If people (travel) ___travel__ to work by bus, there will be fewer car fumes.

6. We ___will save__ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _will have____ (have) fresh water.

8. The level of radioactive pollution will decrease if we __switch___ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) __increases___, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) ___is__ contaminated.

11. If you (be) __were___ the president, what would you do to help the environment?

12. They get sick so often. If they (exercise) __exercised___ more, they (be) ___would be__ healtheir.

13. If I had one million US dollars, I (build) __would build___ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) __tidied___ her room everyday, her mother (not be) ___would not be__ so upset.

15. There isn’t a garden at our house. If there (be) __were___, we (grow) __would grow___ vegetables.

16. It (not be) ___won't be__ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) __will be___ less snow.

18. If I (be) __were___ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) __will see___ big changes in the future.

20. How __would___ you ___travel__ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) __wouldn't be___ any flowers if my sister (not take care) ___didn't take care__ it every day.

22. If pigs (have) __had___ wings, __would they be able___ (they/be able) to fly?

23. If I ___were__ (be) an astronaut, I ____would travel_ (travel) to other planets.

24. If you __didn't see___ (not see) Tom ever again, how ___would you feel__ (you/feel)?

25. What __would you do___ (you/do) if you __saw___ (see) a ghost?

26. If you __eat___ (eat) more of this cake, you __will be___ (be) sick. You’ve already had five slices!

27. Who __would you write___ (you/vote) for if you __were be___ (be) eighteen?

28. If you __were be___ (be) late, we ____didn't wait_ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we ___will suffer__ (suffer) from excessive ultraviolet radioation.

30. If you ___leave__ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution __will be___ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land __is___ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you ___don't smoke__. (not smoke)

34. If it is sunny, we _will do____ a clean-up of the garden. (do)

35. If local residents ___keep__ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _will have____ flowers all year round. (have)

37. If man __keep___ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she __doesn't come___. (not come)

39. If everyone __makes___ a small contribution, we’ll be able to do a good cause. (make)

#Yumi

Based on the context, make conditional sentences type 2 from the clues. 1. My home hasn't installed a solar water heater. If/ my home/ install/ a solar water heater/ we/ save a lot of energy. ➞ 2. Not all households in Viet Nam turn off lights during the Earth Hour. If/ all households/ Viet Nam/ turn off lights/ the Earth Hour/ we/ save enough electricity/ develop our rural areas. ➞ 3. Some students in our school still throw litter on the school ground. If/ students/ our school/ not...
Đọc tiếp

Based on the context, make conditional sentences type 2 from the clues.

1. My home hasn't installed a solar water heater. If/ my home/ install/ a solar water heater/ we/ save a lot of energy.

2. Not all households in Viet Nam turn off lights during the Earth Hour. If/ all households/ Viet Nam/ turn off lights/ the Earth Hour/ we/ save enough electricity/ develop our rural areas.

3. Some students in our school still throw litter on the school ground. If/ students/ our school/ not throw litter/ the school ground/ our campus/ look/ greener/ fresher.

4. People use aluminum cans instead of glass bottles. If/ people/ use/ glass bottles/ they/ use/ again and again.

5. Our school ground is large but we don't have a wind turbine. If/ we/ install/ a wind turbine/ our school/ become/ more eco-friendly.

6. People don't use organic fertilizers. If/ people/ use/ organic fertilizers/ they/ prevent/ land pollution.

7. A large number of people ride their motorbikes to work. If/ people/ ride/ bikes/ they/ keep/ air/ less polluted.

8. That factory doesn't have a wastewater treatment system. If/ that factory/ have/ wastewater treatment system/ river/ not become/ so polluted.

1
1 tháng 4 2020

Base on the context, make conditional sentences type 2 from the clues

1. My home hasn't installed a solar water heater.

\(\rightarrow\) If my home installed a solar water heater, we would save a lot of energy.

2. Not all households in Viet Nam turn off lights during the Earth Hour.

\(\rightarrow\) If all households in Viet Nam turned off lights during the Earth Hour, we would save enough electricity to develop our rural areas.

3. Some students in our school still throw litter on the school ground.

\(\rightarrow\) If the students in our school didn't throw litter on the school ground, our campus would look greener and fresher.

4. People use aluminum cans instead of glass bottles.

\(\rightarrow\) If people used glass bottles, they could use them again and again.

5. Our school ground is large but we don't have a wind turbin.

\(\rightarrow\) If we installed a wind turbin, our school would become more eco- friendly.

6. People don't use organic fertilizers.

\(\rightarrow\) If people used organic fertilizers, they would prevent land pollution.

7. A large number of people ride their motorbikes to works.

\(\rightarrow\) If people rode their bikes, they would keep the air less polluted.

8. That factory doesn't have a wastewater treatment system.

\(\rightarrow\) If that factory had wastewater treatment system, the river would't become so polluted.

Chúc bạn học tốt!