Cho dduong tròn tâm O bán kính 25cm, hai dây AB và CD song song voi nhau có độ dài lần luot là 30 cm và 48 cm .Tính khoảng cách giua 2 dây ấy

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EXERCISE 7: Give the correct forms of words in the brackets 1. The movie was (interest) .................................. than the one on TV. 2. We've got (little) ............... time than I thought. 3. This shirt is too small. I need a (large) ........................ one. 4. Lan is (clever) ................... and (pretty) ..................... than Lien. 5. You are standing too near the camera. Can you move a bit (far) ................ away? 6. Could you speak a bit (slowly) ......................, please? 7. Health and happiness are (important) .................................... than money. 8. You look (thin) ........................... Have you lost weight? 9. This was the ( big) ................ farm I've ever visited. 10. Who between the two workers is the ( good) ................................? 11. This old machine is (powerful) ....................... than we thought. 12. The farmers have never had a (rich) ....................... harvest than that. 13. Which is ( difficult) ...................................., English or Math? 14. The lessons are ( interesting ) ............................ and ( boring)............................... than some years ago. 15. It is the ( expensive) ....................................... of the two cars. 16. My sister drives ( fast) .................................... but ( cares ).................................. than I do. 17. Which is the ( expensive ) ............................................ of these two coats? 18. What is the (long ) ................................... river in Vietnam? GIÚP MÌNH NHANH GẮP

21. Tom is the ______ of the 2 brothers . ( older, oldest, old, elder) 22. You are driving too fast . Can you drive__? ( a bit slowly, a bit more slowly, slowly a bit, slowlier) 23. He is _____ than I first thought. ( little stupid, few stupid, less stupid, the least stupid) 24. She is a _____ and______ driver than her brother. ( slower/ more careful, more slowly/ more carefully, slower/ careful, more slower/ more careful 25. Mercedes is the __ car of all. (the most expensive, the more expensive, expensive, the expensivest) 26. It’s _____ to learn a foreign language in a country where it is spoken. ( a lot easier, easier a lot, a lot easy, a lot more easy) 27. Of all the girls she sang _____. (better, good, the best, very well) 28. Rose is a _____ working student ; she ____ waste a minutes of her time. ( hardly/ hard, hard/ hard, hardly/ hardly, hard/ hardly) 29. I drive much_____ than I did 2 years ago. ( careful, carefully, more careful, more carefully) 30. He got up _____ miss the first bus. (so earlier as to, so early to, so early as not to, too early to) 31. The Pacific is ____ the largest ocean in area. ( by far, far, a little, so) 32. The horse is getting old and cannot run _____ it did. (as fast, so fast than, so faster as, as faster as) 33. Standing____ helped him look ______, attractive and special. (straight/ wonderful, straight/ wonderfully, straightly/ wonderfully, straightly/ wonderful) 34. The more you work, the _____ you'll pass your exams. ( good, better, best, the best) 35. At college the work is harder than the work we did at school, but it is much ______ interesting. ( more, many, most, a few) 36. We don’t think you were _ in ancient history. ( interested, not interesting, interesting, less interested) 37. This is ______ film I’ve ever seen. ( good, worse, the best, better) 38. You look a lot _____ than you did last time I saw you. (sadder, saddest, as sad, more sadder) 39. I wish you were _____ pretty ______ your mother. ( as/as, more/ than, more/ as, as/ than) 40. I earn _____ much money _____ he does. But she earns more______ we both. ( more/ than/ as, as/ as/ than, as / than/ than, as/ more/ than) 41. I ordered __drink __he did. ( the same/ than, the same/ as, the same/ more than, the same/ much) 42. Your car is much more powerful ________ mine, but my small car is _____ expensive _____ yours. ( as/ as/ as, than/ as/ than, than/ as/ as, than/ more/ as) 43. Prices are not ____ in the 1990s. ( much more, more than, the same as, as the same) 44. Paris is ____ exciting ____ London. ( as/ than, as/ as , more/ as, more/ that) 45. He lives quite _____ . ( near, nearly, nearer, nearest) 46. You’ve come too ____ ( later, latest, late, lately) 47. It is _____ difficult to speak to her. (pretty, prettily, prettier, prettiest) 48. We have seen very little of you _____ ( late, lately, later, latest) 49. She is always ____ dressed. ( pretty, prettier, prettily, prettiest) 50. She looked at me ____ and told me to leave the room. ( angry, angrily, angrier, as angry) 51. “ Have you seen him ? “ – “ Yes, he looks ___but he says he feels __” . ( good/ bad, well/ badly, well/ bad, good/ badly 52. His cough sounds ____ . H e should see a doctor. ( terrible, terribly, as terrible, less terrible) 53. Be ___ . Stop talking, behave yourselves. ( quiet, quietly, quieter, quietest) 54. Nurses are required to look after _____ . ( sick and wound, sick and wounded, the sick and wound, the sick and wounded) 55. My mother is _____ than me. ( a head shorter, taller a head, shorter a head, a head tall) 56. I got to the station _ than Tom( early 10 minutes, earlier 10 minutes, 10 minutes early,10 minutes earlier) 57. I think ____ people look after their cars better than young people. ( elderly, elder, older, oldest) 58. I think the board is too wide. I want a ____ one. (narrow, the narrow, narrower, more narrow) 59. Tom is the shortest of _____ in the Smith family. ( any other member, any of the members, anyone of the members, all the members) 60. Among them Mark swims ______. (the fastest, the most fast, the most fastly, most fastly) GIÚP MÌNH NHANH GẮP MN