V.Rewrite the following sentences into conditional ones beginning with the given words: 1. As he is often absent from class, he can’t keep pace with her classmates. (If he íf 2. Be careful, or you make a wrong decision. (If you …..) 3. Today is very cold, so we couldn’t go swimming. (If today ….) 4. I give back the book because I don’t bring enough money . (If I ……….) 5. Don’t make noise or you’ll wake up the baby. (If you ……) 6. Stop talking or you won’t understand the lesson. (If you……) 7. If you don’t invite her, I’m sure she won’t come. (Unless you .) 8. Work harder if you don’t want to lose your job. (Unless……) 9. If you don’t go away, I will phone the police. (Unless …….) 10. My father isn’t here, therefore he can’t give us some advice. [If my father ……] VI Read the passage and choose the correct answer A, B, C or D. Environmental pollution is a term that (1)______ to all the ways by which man pollutes his surroundings. Man dirties the air with (2)______ gases and smoke, (3)_____ the water with chemicals and other substances, and damages the (4)_____ with too many fertilizers and pesticides. Man also pollutes his surroundings (5)_____ various other ways. For example, people ruin natural beauty by (6)_____ junk and litter on the land and in the water. Environmental pollution is one of the most serious problems facing mankind today. Air, water and soil are necessary to the (7)_____ of all living things. Badly polluted air can cause illness, and (8)_____ death. Polluted water kills fish and other (9)_____ life. Pollution of soil reduces the amount of land that is available for growing food. Environmental pollution also brings ugliness to man’s (10)_____ beautiful world. 1. A. means B. refers C. provides D. reduces 2. A. thick B. natural C. exhaust D. influent 3. A. purifies B. pumps C. sprays D. poisons 4. A. soil B. forests C. streets D. beaches 5. A. on B. in C. by D. with 6. A. spoiling B. leaving C. scattering D. gathering 7. A. survival B. environment C. development D. growth 8. A. so B. ever C. too D. even 9. A. animal B. marine C. human D. plant 10. A. nature B. natural C. naturally D. natured