Để đi học, hai bạn Nam và Bách đi bộ từ nhà đến bến xe buýt để đón xe buýt đên trường (bạn Nam đón xe buýt số 1, bạn Bách đón xe buýt số 2). Từ nhà bạn Nam đên trạm xe buyt số 1 mất 5 phút. Thời gian xe buýt số 1 từ trạm đến trường mất 20 phút. Từ nhà bạn Bách đến trạm xe buýt số 2 mất 3 phút. Thời gian xe buýt số 2 từ trạm đến trường mất 15 phút. Biết rằng, vận tốc đi bộ của 2 bạn là như nhau và là x (km/h), vận tốc xe buýt là y (km/h) a) Viết đa thức tính quãng đường từ nhà đến trường của 2 bạn Nam và Bách b) Nhà bạn nào xa trường hơn ? Và xa hơn bao nhiêu km? Nhà Trạm xe buýt Trường học

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EXERCISE 8: Put the verbs in brackets into the correct form 1. If I see him, I (give) ……………WILL GIVE………………………… him a gift. 2. If he (eat) ……………………………………… all that, he will be ill. 3. If he (wash) ……………………………………… my car, I'll give him $10. 4. What will you do if the taxi (not come) ………………………………………? 5. I (ask) ……………………………………… Tom if I (see) ……………………………………… him tomorrow. 6. I (not wait) ……………………………………… for you if you (be) ……………………………………… late. 7. (She/ phone) …………………………………… you if she (have) ……………………………………… any problems? 8. (You /lend) ……………………………………… them some money if they (ask) ……………………………… you? 9. Where (you / go) ……………………………………… if you (pass) ……………………………………… the exam? 10. What (he/ buy) ……………………………………… if his father gives him some money? 11. If I had a typewriter, I (type) ……………………………………… it myself. 12. If he worked more slowly, he (not make) ……………………………………… so many mistakes. 13. I shouldn't drink that wine if I (be) ……………………………………… you. 14. More tourists would come to this country if it (have) …………………………………… a better climate. 15. If someone (give) ……………………………………… you a helicopter, what would you do with it? 16. If I (win) ……………………………………… a big prize in a lottery, I'd give up my job. 17. If I (be) ………………………………… a teacher, I (not have to) ……………………………………… do homework. 18. What (you/ do) ……………………………………… if you (be) ……………………………………… a Miss World? 19. If you (sell) ……………………………………… more products, you'd earn more money. 20. If we ( have ) ……………………………………… more time, we could tell you more about it. 21. I would have bought a new bicycle if I (have) ……………………………………… enough money. 22. If he had worked hard, he (pass) ……………………………………… his examination. 23. If the rain ( stop) ………………………………………, I would have gone for a walk. 24. If you (call) ……………………………………… him, he would have come. 25. I didn't know you were in hospital. If I (know) ……………………………………… I ( go) ……………………………………… to visit you. 26. If I (know) …………………………………… that you were ill last night, I would have gone to see you. 27. He ……………………………………… (pass) his exam if he had studied hard. 28. If you…………………….. (arrive) ten minutes earlier you would have got a seat. 28. You would have seen my garden at its best if you…………………….. (be) here last week.. 29. I shouldn’t have believed it if I…………………….. (not see) it with my own eyes. 29. If I …………………….. (know) his address I’d have given it to you. 30. If he had worked more slowly he …………………….. (not make) so many mistakes.