we meet at 9:30, we (have) plenty of time. a pen in the cellar, don't mention it to anyone. 2. If you (find) 3. The zookeeper would have punished her with a fine if she (feed) the animals. 4. acem If you pass your examination, we (have) 5. Lisa would find the milk if she (look) a celebration. for it in the fridge. 6. What (happen) if I press this button? 7. The door will be unlocked if you (press). the green button. 8. I should have voted for her if I (have) a vote then. 9. If you go to Paris, where you (stay) 10. If you (swim) 11. Unless you (tell) in this lake, you'll shiver from cold. the truth, I won't help you. 12. You'll get pneumonia if you (not change) your wet clothes. it. 13. If I had known that you couldn't eat octopus, I (not buy) that picture lower, people would be able to see it. able to walk faster if she didn't have such high-heel shoes. 14. If they (hang) 15. She (be) 16. I (bring) 17. If you had touched that electric cable, you (be) you some beer if I had known that you were thirsty. electrocuted. 18. If the story hadn't been true, the newspaper (not print) it. if I 19.I (not buy) 20. Dan (arrive) things on the installment system were you. safe if he drove slowly. III. Complete the sentences, using the correct form of the words in brackets. to see the stars in the sky. (able) 1. Light pollution make us 2. Noise is considered as pollution. (environment) 3. The soil becomes because of the use of so many pesticides and fertilizers. (contaminate) waste spills can contaminate groundwater. (industry) habitats have been destroyed in recent years. (nature) chemicals. (harm) 4. 5. 6. A number of cleaning products contain 7. Water samples collected at these villages were seriously (contaminate) with bacteria. water has brought cancer to the local residents. (pollute) (die) 8. People believe that the 9. In many developing countries, water pollution is usually a leading cause