2^x + 2^y= 2^x+y với x,y thuộc N

Change these sentences into reported speech or direct speech 4. “I did ten exercises yesterday evening” Nga told me. …………………………………………………………………………………………… 5. “I’ll phone you as soon as I arrive in Hanoi tomorrow” Nam told Nga. ……………………………………………………………………………………………. 6. “Will I have to come to the meeting next week?’’ He said to me. …………………………………………………………………………………………… 7. "Don't smoke here" I said to him …………………………………………………………………………………………… 8. "If I were you, I’d offer this job”. …………………………………………………………………………………………… 9. Mary told me that she liked my new dress very much. …………………………………………………………………………………………… 10. “What will you do when you leave school?” Ba asked me …………………………………………………………………………………………… giúp mik bài ktra 15p vs ạ vote 5 sao xin cảm ơn

A là C7O6H2 tỉ lệ của A và NaOH là 1:2 Vậy A thuộc loại hợp chất nào ? \Gải đầy đủ

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9. I didn't tell her any good news because I wasn't here.

11. What’s your _______ ? – I’m Vietnamese. A. nation B. national C. nationality D. international 12. In this course, students receive _______ in the basic English grammar. A. instruct B. instructional C. instruction D. instructive 13. After her father’s death, she came into________ of a great fortune. A. possess B. possession C. possessive D. possessively 14. I _____ him for his honesty. A. respective B. respectful C. respectable D. respect 15. All of the students appreciate the ______ of English learning. A. import B. important C. importantly D. importance 16. She is ______ in asking for bigger salary. She has worked hard. A. reason B. unreasonable C. reasonable D. unreasonably 17. We can enjoy live programmes through _______ satellites. A. communicate B. communication C. communicative D. communicable 18. Learning English has become a ______ in our country. A. necessitate B. necessary C. necessity D. necessarily 19. Computers are ______ used in schools and universities. A. widely B. wide C. width D. widen 20. He retired at the ______ of 60. A. age B. old C. older D. elder 21. My teacher always give us a clear ______. A. explain B. explained C. explanatory D. explanation 22. The _____ of the moon for the earth causes the tides. A. attract B. attracted C. attractive D. attraction 23. Your bad result made me ______ . A. disappoint B. disappointment C. disappointed D. disappointing 24. Getting such a well-paid job is very beyond my ______. A. expect B. expected C. expecting D. expectation 25. Hai has sometimes been unsuccessful just because he is not _____ of other people’s opinions. A. tolerate B. tolerable C. tolerant D. tolerated 26. It has been proved ______ that the unemployment rates are increasing. A. statistic B. statistics C. statistical D. statistically 27. She has made an _______ for the job as a nursery teacher because she like children. A. apply B. applicant C. application D. applicator 28. Daisy has been out of work for 3 months. She stay at home and does the housework_______. A. disappoint B. disappointed C. disappointedly D. disappointing TEACHER: NGUYEN THI KHANH LINH 4 29. She is a biologist. She is interested in _______ . A. conserves B. conservancy C. conservation D. conservative 30. More and more people die of food ______ nowadays. A. poison B. poisonous C. poisonment D. poisoning 31. There is no ______ for them to do that. A. need B. needs C. needless D. needing 32. The _____ development leads to our country’s prosperity. A. industry B. industries C. industrial D. industrialize 33. Farmers ______ their land to make it _______. A. fertilize / product B. fertilizer / productive C. fertilize / production D. fertilize /productive 34. Many communities are burning garbage and other biological waste products to produce ______. A. electric B. electricity C. electrician D. electrify 35. _______wildlife needs the cooperation of the public. A. safe B. safety C. safeguard D. safeguarding 36. Stress and tiredness often lead to lack of _______. A. concentrate B. concentration C. concentrated D. concentrator 37. Human being are the worst _______ on the earth. A. pollutes B. polluters C. pollutants D. pollutions 38. A combine harvest is very ______, it can cut and thresh rice at the same time. A. use B. useless C. useful D. usefulness 39. Mrs. Christine has been told by her doctor that she is _________, she cannot have a child of her own. A. childless B. childhood C. childish D. child 40. Are you _____ of the danger that you are facing? A. sense B. sensible C. senseless D. sensation 41. Thanks to my friends’ ________ remarks, my essay has been improved. A. construct B. construction C. constructive D. constructor 42. What is your _____ in life? A. aim B. aimless C. aimlessly D. aimlessness 43. The matter is under ______. A. investigate B. investigation C. investigatory D. investigative 44. The president traveled under the ______ of many soldiers. A. protect B. protective C. protection D. protector 45. The US made a _____ declaration of war to Iraq. A. formal B. formality C. formalize D. formalism 46. I sometimes do not feel ______ when I’m at a party. A. comfort B. comforter C. comfortable D. comfortably 47. Women show a _______ to live longer than men. A. tend B. tendentious C. tendency D. tendentiously 48. It is necessary for the host to make his guest feel comfortable and _____ A. relax B. relaxation C. relaxing D. relaxed TEACHER: NGUYEN THI KHANH LINH 5 49. Their _____ has last for more than 20 years. A. friends B. friendly C. friendship D. friendness

1.Some of the witnesses had to be criticized by television cameras and reporters(gauntlet) 2 The seller thought he’d fooled me, but I knew the bracelet wasn’t real gold and told him so. (put) 3 . I decided to try to do something new. (go) 4 He promised me that he was 100% reliable. (word) 5 He is always complaining about her coming late. (back)

giải giúp e câu hình này với ạ T_T

Đề là Find out one underlined word or phrase that wouldn’t be appropriate in standard written english

Em cần gấp ạ, mng chỉ được điền 1 từ vào chỗ trống thôi ạ. Hứa cho CTLHN (7) _____________ most people are aware of the dangers of radiation, not many consider that they might be at risk in their own homes from radon, a naturally occurring radioactive gas. (8) _____________ it is colorless and odourless, home owners may not be aware of potential problems. However, radon is (9) _____________ dangerous that in the USA alone it is the second most common cause of lung cancer. (10) _____________ there are no immediate symptoms of exposure, which may take years to surface, it's as well to have your house tested if you are in a risk area.