XI. Joining two sentences, using the words in brackets.
1. We must conserve water. Otherwise we will face serious water shortages. (IF)
__________________If we don't conserve water, we will face serious water shortages ______________________________________________
2. The weather was awful. We didn’t enjoy our camping holiday. (BECAUSE OF)
____________________Because of the awful weather, we didn't enjoy our camping holiday____________________________________________
3. Plastic bags are non-biodegradable. They will remain in the environment for many years.
(SINCE)
______________________Plastic bags will remain in the environment for many years since they are non-biodegradable__________________________________________
4. Paul doesn’t think about the planet. He wastes so much water. (IF)
_______________________If Paul though about the planet, he wouldn't waste so much water_________________________________________
5. Water pollution happens. Many aquatic animals such as fish can die. (LEAD)
____________________Water pollution can lead to the death of many aquatic animals such as fish___________________________________________
6. The climate is changing. The earth is getting warmer. (BECAUSE)
_______________________Because the climate is changing, the earth is getting warmer _________________________________________
7. We should stop cutting down so many trees. We endanger our oxygen supply. (UNLESS)
_________________________Unless we stop cutting down so many trees, we will endanger our oxygen supply _______________________________________
8. People begin to recycle. They generate much less trash. (WHEN)
_____________________________When people begin to recycle, they generate much less trash___________________________________
9. We are damaging the ozone layer. The ozone layer is necessary for human existence.
(EVEN THOUGH)
___________________________Even though the ozone layer is necessary for human existence, we are damaging the ezone layer_____________________________________
10. Sue is suffering from skin cancer. She was exposed to radiation when she was young. (SO)
_______________________Sue was exposed to radiation when she was young so she is suffering from skin cancer_________________________________________

XI. Joining two sentences, using the words in brackets.

1. We must conserve water. Otherwise we will face serious water shortages. (IF)

_______________If we don't conserve water, we will face serious water shortages.

_____________________________________________________

2. The weather was awful. We didn’t enjoy our camping holiday. (BECAUSE OF)

___________Because of the awful weather, we didn't enjoy our camping holiday.

_________________________________________________________

3. Plastic bags are non-biodegradable. They will remain in the environment for many years. (SINCE)

________Since plastic bags are non-biodegradable, they will remain in the environment for many years.

____________________________________________________________

4. Paul doesn’t think about the planet. He wastes so much water. (IF)

___________If Paul thought about the planet, he wouldn't waste so much water.

_________________________________________________________

5. Water pollution happens. Many aquatic animals such as fish can die. (LEAD)

_______Water pollution leads to the death of many aquatic animals such as fish.

_____________________________________________________________

6. The climate is changing. The earth is getting warmer. (BECAUSE)

___________Because the climate is changing, the earth is getting warmer.

_________________________________________________________

7. We should stop cutting down so many trees. We endanger our oxygen supply. (UNLESS)

__________Unless we stop cutting down so many trees, we will endanger our oxygen supply.

__________________________________________________________

8. People begin to recycle. They generate much less trash. (WHEN)

_________When people begin to recycle, they generate much less trash.

___________________________________________________________

9. We are damaging the ozone layer. The ozone layer is necessary for human existence. (EVEN THOUGH)

_________Even though the ozone layer is necessary for human existence, we are damaging it.

___________________________________________________________

10. Sue is suffering from skin cancer. She was exposed to radiation when she was young. (SO)

____________Sue was exposed to radiation when she was young, so she is suffering from skin cancer.

________________________________________________________

I. Supply the correct verb forms of the verbs in brackets. (2 pts)

1. If we ______don't stop____ (not stop) cutting down so many trees, we’ll endanger our oxygen supply.

2. Last year Mr. Johnson _______taught______ (teach) us Robotics.

3. My sister is really busy – she ______is studying_______ (study) for the exam.

4. In the future, robots _______will do______ (do) things that people can’t do or don’t want to do.

5. Mark _______has been______ (be) to Sa Pa twice. The first time ______was_______ (be) more than ten years ago.

6. How often ______do you do_______ (you/ do) household chores? ~ Every day.

7. Twenty years ago, most people around the world _______didn't know______ (not know) what the Internet was.

8. If we dump all sorts of chemicals into rivers, we ______won't be able to_______ (not be able to) swim in them in the future.

9. Mary and I are looking forward _______to seeing______(see) you.

10. My father wanted me _______to become_______ (become) a pilot.

11. My father ______watches_____________ (watch) News in 60 Seconds every evening.

12.____________Have you ever met_______ (you/ ever/ meet) a famous football player?

13. Ten years ago, people ________didn't spend___________ (not spend) as much time on screens as they do today.

14. Mr Gray ________has taught___________ (teach) French here since 2015.

15. We ________will fly___________ (fly) to Washington tomorrow afternoon.

16. Gustave Eiffel _________designed__________ (design) Eiffel Tower in 1889.

17. Someone ________is knocking___________ (knock) at the door. Can you see who it is?

18. I __________don't play_________ (not play) basketball because I’m not tall enough.

19. The driver stopped ________to have_____ (have) a coffee because he felt sleepy.

20. I can’t read when I am traveling. It makes me ________feel_____(feel) sick.

I. Supply the correct verb forms of the verbs in brackets. (2 pts)

1. If we ______don't stop____ (not stop) cutting down so many trees, we’ll endanger our oxygen supply.

2. Last year Mr. Johnson _______taught______ (teach) us Robotics.

3. My sister is really busy – she ______is studying______ (study) for the exam.

4. In the future, robots _______will do______ (do) things that people can’t do or don’t want to do.

5. Mark _______has been______ (be) to Sa Pa twice. The first time _______was______ (be) more than ten years ago.

6. How often ______do you do_______ (you/ do) household chores? ~ Every day.

7. Twenty years ago, most people around the world _______didn't know______ (not know) what the Internet was.

8. If we dump all sorts of chemicals into rivers, we _______won't be able to______ (not be able to) swim in them in the future.

9. Mary and I are looking forward ______seeing_______(see) you.

10. My father wanted me _______to become_______ (become) a pilot.

11. My father _________watches__________ (watch) News in 60 Seconds every evening.

12.__________Have you ever met_________ (you/ ever/ meet) a famous football player?

13. Ten years ago, people __________didn't spend_________ (not spend) as much time on screens as they do today.

14. Mr Gray ___________has taught________ (teach) French here since 2015.

15. We _________will be flying__________ (fly) to Washington tomorrow afternoon.

16. Gustave Eiffel ___________was designed________ (design) Eiffel Tower in 1889.

17. Someone __________is knocking_________ (knock) at the door. Can you see who it is?

18. I __________don't play_________ (not play) basketball because I’m not tall enough.

19. The driver stopped _______to have______ (have) a coffee because he felt sleepy.

20. I can’t read when I am traveling. It makes me _______feel______(feel) sick.

1 don't stop

2 Have you ever lived

3 to open

4 knew

5 won't write

6 is listening

7 are going to visit

8 to drink

1. don't stop

2. Have you ever lived

3. to open

4. knew

5. won't write

6. is listening

7. will visit

8. to drink

1. don't stop

2. Have you ever lived

3. to open

4. knew

5. won't write

6. is listening

7. are going to visit

8. to drink

put the verbs in brackets into the correct form

1.We ___will save___(save)thousands of trees if we __keeps___(keep)polluting the environment

2.What ___will happen____(happen) if we ____don't waste_____(not waster)so much paper

3.If we _____don't stop___(not stop)cutting down so many trees,we_____will endanger____(endanger)our oxygen supply

4.If people ____dump___(dump)chemicals into rivers,they___won't be______(not be) able to swim in the future

put the verbs in brackets into the correct form

1.We ___will save___(save)thousands of trees if we ___keep__(keep)polluting the environment

2.What ____would happen___(happen) if we ____didn't waster_____(not waster)so much paper

3.If we ___don't stop _____(not stop)cutting down so many trees,we____will endanger_____(endanger)our oxygen supply

4.If people ____dump___(dump)chemicals into rivers,they_____will not be ____(not be) able to swim in the future

we are destroying the earth by these acts of enviromental pollution . Example :

+ water pollution

+ air pollution

+ soil pollution so they can not grow a lot of food , some countries have very little rice

không có trong bài bạn à

z ak

ko pit nen tui hỏi thôi

1. He'd like to play badminton . He has to work (but)

→ He'd like to play badminton, but he has to work 

2. He was tired . He worked hard ( Because)

→ He was tired because he worked hard

3. Why don't take part in the game ? (suggest)

→ He suggested taking part in the game

4. People stop cutting down the trees in the forests . Our forests will be preserved (If)

→ If people stop cutting down the trees in the forests, our forests will be preserved

5. The sun was shining . The water was cold (although)

→ Although the sun was shining, the water was cold

6. We stayed in a hotel . The hotel was very expensive (which) 

→We stayed in a hotel which was very expensive 

1.No,there aren't

2. The air has to much smokes in many cities in the world.

3. The people are burning forests.

4. No, they don't

5. The earth is in danger.

6. We should save the earth

1. No, they aren't

2. There is too much smokes in the air in many countries in the world.

3. They are burning the forest. They are also destroying lots of plants and trees

4. No, they don't

5. The earth is in danger.

6. We should save the earth.

1. No, there aren't.

2. There is too much smokes in the air in many cities in the world.

3. The people are burning the forests.

4. No, they don't.

5. The Earth is in danger.

6. We should save the Earth by keeping the environment clean and beautiful.