IV. Complete the sentences, using the correct form of the words in brackets.

1. People believe that the water has brought cancer to the local residents. (pollute)

2. Light pollution make us to see the stars in the sky. (able)

3. Noise is considered as pollution. (environment)

4. habitats have been destroyed in recent years. (nature)

5. A number of cleaning products contain chemicals. (harm)

6. Water samples collected at these villages were seriously with bacteria. (contaminate)

7. An of agrochemicals is pesticides. (illustrate)

8. Contaminants are usually to aquatic plants. (poison)

V. Fill in each blank with the correct preposition.

1. Land pollution is responsible for damage done natural habitat of animals.

2. Americans throw twenty-eight and a half million tons of plastic in landfills every year.

3. Scientists have come up new ways of saving energy.

4. Thousands of people were exposed radiation when the nuclear plant exploded.

5. Waste water from many factories which is dumped water bodies directly causes water pollution.

II. Read the passage and complete the sentences. True (T) or false (F).

Air pollution is a serious problem in many cities. Motor vehicles, factories and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulties in disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up. Citizens, governments, industries, scientists, and business people must work together in different ways to gradually reduce pollution. For example, most cities have introduced recycling programmes.

¨ 1. Motor vehicles and factories are among some sources of air pollution.

¨ 2. Air pollution doesn’t endanger people’s health in some cities.

¨ 3. Air pollution is the only problem of the environment mentioned in this passage.

¨ 4. Garbage disposal is a problem in many large cities.

¨ 5. Everyone must cooperate to reduce pollution.

¨ 6. We can reduce pollution by recycling programmes only.

I. Read the passage and fill in the blanks with the correct words.

Environmental pollution is a term that (1) to all the way by which man pollutes his surroundings. Man dirties the air with gases and smoke, (2) the water with chemicals and other substances, and damages the soil with (3) many fertilizers and pesticides. Man also pollutes his surroundings (4) various other ways for (5) , people run natural be run natural beauty by scattering little on the land and in the water. They operate machines and motor vehicles that fill the air with disturbing (6) pollution.

Environmental pollution (7) one of the most serious (8) feeing mankind today. Air, (9) and soil are necessary to the survival of all living things. Badly - polluted air can cause illness, and (10) death. Polluted water kills and other marine life. Pollution of soil reduces the amount of land for growing food. Environmental pollution also brings ugliness to man’s naturally beautiful world.

I. Choose the word that has the underlined part pronounced differently from the others.

1. A. paddy B. sand C. travel D. tribal

2. A. buffalo B. photo C. limestone D. botanical

3. A. jungle B. luggage C. sunbathe D. sugar

4. A. around B. various C. sound D. mountains

5. A. heritage B. giant C. garden D. village

II. Choose the words that have the different stress from the others.

1. A. definition B. electricity C. contaminate D. radiation

2. A. dramatic B. overhead C. century D. groundwater

3. A. thermal B. beneath C. rubbish D. earplug

4. A. affect B. billboard C. visual D. substance

5. A. aquatic B. behavior C. pollution D. permanent

III. Choose the best answer A, B, C or D.

1. If I the same problem you had as a child, I might not have succeed in life as well as you have.

A. have B. would have C. had had D. should have

2. I you sooner had someone told me you were in the hospital.

A. would have visited B. visited C. had visited D. visit

3. more help, I would call my neighbor.

A. Needed B. Should I need C. I have needed D. I should need

4. then what I know yesterday, I would have saved myself a lot of time and trouble over the years.

A. Had I known B. Did I know C. If I know D. If I would know

5. Do you think there would be less conflict in the world if all people the same language?

A. spoke B. speak C. had spoken D. will speak

6. If you can give me one good reason for your acting like this, this incident again.

A. I will never mention B. I never mention

C. will I never mention D. I don’t mention

7. If I had known you were asleep, I so much noise when I came in.

A. didn’t make B. wouldn’t have made

C. won’t make D. don’t make

8. Unless you all of my questions, I can’t do anything to help you.

A. answered B. answer C. would answer D. are answering

9. Had you told me that this was going to happen, I it.

A. would have never believed B. don’t believe

C. hadn’t believed D. can’t believe

10. If Jake to go on the trip, would you have gone?

A. doesn’t agree B. didn’t agree C. hadn’t agreed D. wouldn’t agree

11. Jane: “John went to the hospital alone”,

Katy: “If , I would have gone with him”.

A. had he told me B. he had told me

C. he has told me D. he would tell me

12. If you , I would have brought my friends over to your house yesterday to watch T.V, but I didn’t want to bother you.

A. had studied B. studied C. hadn’t studied D. didn’t study

13. Peter: “Did you need help with your Math last night?”

Mary: “If I had needed, I you".

A. would call B. called C. would have called D. will call

14. If someone into the store, smile and say, “May I help you?”

A. comes B. came C. come D. should come

15. “Here’s my phone number”.

“Thanks. I’ll give you a call if I some help tomorrow”

A. will need B. need C. would need D. needed

16. If I didn’t work for an accounting firm, I in a bank now.

A. work B. will work C. have worked D. would work

17. The death rate would decrease if hygienic conditions improved.

A. was B. is C. were D. had been

18. The education in Japan if the basic principles of education had not been taken into consideration.

A. would go down B. would have gone down

C. went down D. had gone down

19. If there , the rice fields could have been more productive.

A. had been enough water B. were enough water

C. would be enough water D. are enough water

20. The patient will not recover unless he an operation.

A. had undergone B. would undergo

C. undergoes D. was undergoing

21. If she him, she would be very happy.

A. would meet B. will meet C. met D. should meet

22. If he a thorough knowledge of English, he could have applied for this post.

A. had had B. had C. has D. has had

23. If I had enough money, I abroad to improve my English.

A. will go B. would go C. went D. should have go to

24. The bench would collapse if they on it.

A. stood B. stand C. standing D. stands

25. If it convenient, let’s go out for a drink tonight.

A. be B. is C. was D. were

IV. Complete the sentences, using the correct form of the words in brackets.

1. People believe that the water has brought cancer to the local residents. (pollute)

2. Light pollution make us to see the stars in the sky. (able)

3. Noise is considered as pollution. (environment)

4. habitats have been destroyed in recent years. (nature)

5. A number of cleaning products contain chemicals. (harm)

6. Water samples collected at these villages were seriously with bacteria. (contaminate)

7. An of agrochemicals is pesticides. (illustrate)

8. Contaminants are usually to aquatic plants. (poison)

I. Correct the verbs form to complete the sentences.

1. If you (go) away, please write to me.

2. If he (eat) another cake, he will be sick.

3. I (not do) that if I (be) you.

4. If he (take) my advice, everything can go well.

5. He never does homework. If he (do) his homework, he (not worry) about his exam.

6. What you (do) if she refuses your invitation?

7. If today (be) Sunday, we (go) to the beach.

8. Unless they (pass) their examinations, they would join the army.

9. You (be) ill if you drink that water.

10. If Tom (go) to bed earlier, he would not be so tired.

11. If it’s raining heavily, we (not go) for a donkey ride.

12. If he (try) hard, he’ll pass the examination.

13. I could understand the French teacher if she (speak) more slowly.

14. If I (finish) the work in time, I (go) to the football game.

15. If you (see) Mary today, please (ask) her to call me.

II. Complete the sentences with the correct verb form in the bracket.

1. If someone offered to buy you one of those rings, which you (choose) ?

2. The flight may be cancelled if the fog (get) thick.

3. If the milkman (come) , tell him to leave two pints.

4. I (call) the office if I were you.

5. Someone (sit) on your glasses if you leave them there.

6. You would hear my explanation if you (not talk) so much.

7. What you (do) if you hear the burglar alarm?

8. If you (read) the instructions carefully, you wouldn’t have answered the wrong question.

9. If Mel (ask) her teacher, he’d have answered her questions.

10. I would repair the roof myself if I (have) a long ladder.

11. Unless they turn that radio off, I (go) mad.

12. If you were made redundant, what you (do) ?

13. We’ll have a long way to walk if we (run) out of petrol here.

14. If you shake that bottle of port, it (not be) fit to drink.

15. If you spoke louder, your classmates (understand) you.

16. I’ll probably get lost unless he (come) with me.

17. You (not have) so many accidents if you drove more slowly.

18. If you (wear) a false beard, nobody would have recognized you.

19. If she (leave) the fish here, the cat will eat it

20. You (have) no trouble at school if you had done your homework.