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tìm x,y thuộc Z (3x+4) chia hết (x+1) (x^2 +2)(x-6)<0 (2x-1).(x+3)
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I. Choose the best answer to complete each of the following sentences. 26. If you have any excess __________, you must pay extra money. A. furniture B. tool C. luggage D. facility 27. David __________ a seat on the evening flight to Ho Chi Minh City. A. travelled B. paid C. booked D. made 28. They are going to spend their holiday __________rural France. A. relaxing B. exploring C. reserving D. searching 29. Cua Lo Beach is also famous for its beautiful islands such as Lan Chau and Song Ngu which protect it from heavy storms and strong winds __________from the East Sea. A. to come B. to come in C. coming D. coming in 30. __________popular with tourist of young people age because they travel with minimum luggage and on a limited budget. A. Backpack B. Backpacking C. Backpacker D. Go backpacking 31. We went out for __________ dinner last night. __________restaurant we went to was excellent. A. x/a B. the/the C. x/ the D. the/ a 32. Did __________ police find __________ person who stole your bicycle? A. a/a B. the/the C. a/the D. the/a 33. I'm looking for _________ job. Did Mary get __________ job she applied for? A. a/the B. the/a C. a/a D. the/the 34. We live in __________ big house in __________ middle of the village A. a/a B. a/the C. the/the D. the/a 35. This morning I bought a newspaper and a magazine. __________ newspaper is in my bag but I don't know where __________ magazine is. A. a/a B. a/the C. the/the D. the/a 36. If I was in charge, I _________ things differently. A. did B. would do C. will do D. doing 37. There seem to be _________ tourists around this year. A. little B. less C. few D. fewer 38. The people _________ we met in France have sent us a card. A. who B. x C. whom D. all A, B & C 39. _________ people I met there were very friendly. A. the B. a C. an D. x 40. If he _________ his IT skills, he'd easily get a job. A. improves B. improved C. will improve D. is improving 41. _________ horses are animals, but not _________ animals are horses. A. All/the B. The/all C. A/the D. All/all 42. There's still _________ wine in the bottle. A. few B. a few C. any D. some 43. She travels to all kinds of _________ locations all over the world. A. exotic B. same C. similar D. far 44. It arrived while I was on _________. A. absence B. Christmas C. New Year D. safari 45. The result will depend on a number of different_________. A. aspects B. factors C. ideas D. thoughts 46. Unfortunately, my flight to Da Nang was _________ for one and a half hour. A. delayed B. held up C. held on D. both A & B 47. Vietnam has a great number of tourist_________; therefore, it is a good destination for many travellers worldwide. A. attractive B. attractives C. attraction D. attractions 48. From London to Oxford and back is a _________ trip of over a hundred miles. A. round B. return C. one way D. both A & B 4. If you want to book a package tour, you should contact the _________ which I introduced to you previously. A. travel agent B. travel agency C. agent travel D. agency travel 50. He had _________ two expeditions to Spain to study wild plants by the end of 2010. A. taken B. made C. done D.gone

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