30.When (visual/ thermal/ light/ radioactive) pollution happens, the water temperature in streams, rivers or oceans changes. 31.We can’t see stars at night (because of/ because/ since/ due) the light pollution.

32. If you (was / were/ are/ could be) in my position, you would understand me.

33. If the water temperature (increase/ increases/ is increased/ increased), some aquatic creatures will be unable to reproduce. 34. Because the water is polluted, (aquatic/ electric/ chemical/ fresh) plants may also die

35. (Noise/ Headache/ Earplug/ Symptom) is any sound that is loud and constant

36. Do you know what (polluted/ pollute/ pollution/ pollutant) cause air pollution

37. (Poison/ Poisonous/ Poisoning/ Poisoned) chemical waste is dumped into the river by many factories

38. The (dead/ die/ death/ died) fish are floating in the water.

39. We plant trees, (due to/ because/ because of/ so) we can have fresh air

40. When the loudness of sounds is more than (20 dBs/ 30dBs/ 50 dBs/ 70dBs), noise pollution happens

41. Too much carbon dioxide (CO2) in the atmosphere (causes/ lead/ result/ make) to global warming

42. Waste from households will gradually (contamination/contaminate/contaminant/ contaminated) the lake.

43.When (visual/ thermal/ light/ radioactive) pollution happens, the water temperature in streams, rivers or oceans changes. 44. Many seabirds were (die/ death/ dead/ died) because of the oil spill

. 45. (Aquatic/ Electric/ Chemical/ Fresh) plants may also die because of the polluted water

46. If we (polluted/ pollute/ pollution/ pollutant) the air, more people will have breathing problems

47. If you can experience noise pollution for a long time, you can have headache, high blood pressure and (hearing loss/ contaminant/cough/ radiation)

There are many kinds of pollution. Air, water, and land can be polluted. Some pollution is caused by nature, such as floods, forest fires, and volcanoes. People are the major cause of pollution. We pollute the air with our cars, homes, and factories. Smoke from factories and car exhaust makes the air looks gray and smoggy. Some people cannot go outside when the air is very bad! We pollute the water by dumping garbage and chemicals in the water. Plants and animals die because of the pollution in the water. We pollute the soil with chemicals and garbage. We harm the land by cutting down trees in the forest, especially to build roads and new houses without careful planning and thinking.

     The only way to save our environment is to think about pollution. How can you stop or limit pollution? How do we protect our environment? Conservation is one way to protect our environment. Conservation is the wise use and protection of our environment. We can control water pollution by not producing as much waste and by proper disposal of sewage and garbage. We can take care of recreation land by cleaning up after ourselves and not causing more pollution. Carpooling and public transportation will help reduce air pollution.

     Recycling is a type of conservation. Recycling is reusing items over again or in a new way. Recycling can help US conserve our natural resources so they will last many more years.

A. Find the word in bold in the passage that means:

1. the protection of the natural environment                                       …………..

2. have a bad effect on something                                                       …………..

3. a large amount of water covering an area that is usually dry          …………..

4. sharing a car ride with other people                                                …………..

5. waste gases that come out of an engine                                          …………..

6. the process of making air, water, soil, etc. dirty                             …………..

7. get rid of                                                                                  …………..

18. The water was so polluted that the explorers could not drink it.

         A. The water was too polluted for the explorers to drink .

         B. The water was  polluted enough for the explorers to drink .

         C. The water was too polluted for the explorers  drinking .

         D. The water was polluted enough for the explorers drinking.

19. His doctor advised him ……………smoking, but he find it impossible ………..his habit.

         A. stopped / quit        B. To stop/ quitting    C. stopping/ for quitting          D. to stop/ to quit

20. The company was made …………….100.000 USD in taxes.

         A. pay                            B. to pay                       C. paying                           D. paid

21. I hear you are preparing …………….for Australia.

         A. leaves                       B. to leave                    C. leaving                          D. left

22. The children were eager …………. their parents.

         A. to see                        B. see                             C. seeing                            D. saw

23. I would rather ………….at home.

         A. to stay                      B. staying                      C. stayed                           D. stay

24. He refused …………….her ………….for herself.

         A. to allow / think      B. allow / to think      C. allowing / thinking    D. to allow / to think

25. I keep getting this pain in my leg. I think I would better ……………a doctor.

         A. seeing                       B. to see                        C. see                                 D. x

26. It is impossible for her ………….the office.

         A. ringing                      B. ring                            C. to ring                           D. rang

27. The government has few options except …………….interest rates high.

         A. keeps                        B. to keep                     C. keeping                         D. of keeping

28. Have you got time …………….the report today.

         A. finishes                     B. to finish                    C. finishing                        D. finished

29. She is in a hurry. She has a train ……………….

         A. catching                   B. catches                     C. to catch                        D. caught

30. John, I have something interesting …...you but you have to promise …...it secret.

         A. for telling / keeping                                      B. to tell / keep                C. to tell / to keep  D. told / kept

31. The guards were watching a shoplifter ………….along the shop windows.

         A. go                              B. to go                         C. went                              D. gone

32. The skiers would rather ……………through the mountain than go by bus.

         A. to travel on train   B. traveled by train    C. travel by train             D. traveling by train

Chọn phương án đúng cho các câu sau.

1. I _________ show you this element right now.

A. can​B. could​C. will be able to

2. He _________ phone his mom yesterday.

A. can​B. could​C. will be able to

3. I _________ say at the hotel there next week.

A. can​B. could​C. will be able to

4. Paul _________ play the violin excellently

A. can​B. could​C. will be able to

5. Mona _________ get this invitation last month.

A. can​B. could​C. will be able to

6. We _________ complete in basketball next week.

A. can​B. could​C. will be able to

7. They _________ ride their bikes well now.

A. can​B. could​C. will be able to

8. Pam _________ take that photo last year.

A. can​B. could​C. will be able to

9. Dan _________ repair his computer, he knows it well.

A. can​B. could​C. will be able to

10. I _________ cook this tasty cake now.

A. can​B. could​C. will be able to

11. Lola _________ run better last year.

A. can​B. could​C. will be able to

12. They _________ train in the gym in two days.

A. can​B. could​C. will be able to

13. We _________ talk about it for a long time.

A. can​B. could​C. will be able to

14. Do you think we _________ park over here?

A. can​B. could​C. will be able to

15. _________ you taste the garlic in this stew?

A. Can​B. Could​C. Will be able to

16. _________ you understand what he said?

A. can​B. could​C. will be able to

17. I don’t think he _________ win the next competition.

A. can​B. could​C. will be able to

18. Listen! We _________ hear a train in the distance.

A. can​B. could​C. will be able to

Ex4. Write conditional sentences type I or II for these situation.

1. People eat dirty food. They can be cancer.

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

3. Farmers use polluted water to water their plants. People eat these plants, they become sick with diseases such as diarrhea, bacterial in flections even cancer

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

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

l. People eat dirty food. They can be cancer. 2. A factory directly discharges a large volume of waste water into the Thi Vai River. The river is polluted. 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. 4. Thermal pollution takes place. The water temperature in streams, rivers, lakes and oceans will increase or decrease suddenly. 5. People live in radioactive pollution area. They can be skin cancer.

Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions. 1. You shouldn’t swim in that polluted lake.      A. 1. Don’t swim in that polluted lake.

B.  Let’s pollute the lake.

C.  How about swimming in that lake?

D.  You have to swim in that polluted lake.

2.  Teacher robots might teach all subjects in the future.

A.                  Teacher robots can’t replace all subjects.

B.                  Teacher robots will be able to teach all subjects in the future.

C.                  Teacher robots won’t be able to teach us.

D.                  Teacher robots will be useless in the future.

3.  You can use my car. However, you have to keep it carefully.

A.                  If you don’t use my car, you will have to keep it carefully.

B.                  If you use my car, you won’t have to keep it carefully.

C.                  If you use my car, you will have to keep it carefully.

D.                  If you use my car, you will have it carefully.

4.  Press this button to start the car.

A.                  If you want to start the car, don’t press this button.

B.                  If you don’t want to start the car, please press this button.

C.                  If you want to start the car, press this button.

D.                  If you want start the car, please press this button.
5. If he doesn’t work hard, he will lose his job.  A. Unless he work hard, he will lose his job. 

B.   Unless he works hard, he will lose his job. 

C.   Unless he doesn’t work hard, he will lose his job. 

D.  When he works hard, he will lose his job.