Giúp mình giải bài 2 nha mn

Rewrite the following sentences into the passive voice

1.      People often take him for his brother.

      =>________________________________________________________________________            

2.      Someone seems to have made a terrible mistake.

      =>________________________________________________________________________            

3.      He recommends fitting new tires.

      =>________________________________________________________________________            

4.      He suggested allowing tenants to buy their houses.

      =>________________________________________________________________________            

5.      It is your duty to make tea at eleven o'clock.

      =>________________________________________________________________________            

6.      People know that he is armed.

      =>________________________________________________________________________            

7.      Someone has seen him pick up the gun.

      =>________________________________________________________________________            

8.      We know that you were in town on the night of the crime.

      =>________________________________________________________________________            

9.      They think that your father was a spy in the World War II.

      =>________________________________________________________________________            

10.  We believe that he has special knowledge which may be useful to the police.

      =>________________________________________________________________________            

11.  You needn't have done this.

      =>________________________________________________________________________            

12.  He likes people to call him "Sir".

      =>________________________________________________________________________            

13.  Don't touch this switch..

      =>________________________________________________________________________            

14.  You have to see it to believe it.

      =>________________________________________________________________________            

15.  He doesn't like people laughing at him.

      =>________________________________________________________________________            

16.  You don't need to wind this watch.

      =>________________________________________________________________________            

17.  They shouldn't have told him.

      =>________________________________________________________________________            

18.  Don't speak until someone speaks to you.

      =>________________________________________________________________________            

19.  It is impossible to do this.

      =>________________________________________________________________________            

20.  He hates people making fun of him.

      =>________________________________________________________________________            

21.  Everyone thought that the Government had ignored their opinions.

      =>________________________________________________________________________            

22.  They gave him artificial respiration.

      =>________________________________________________________________________            

23.  Before they invented printing people had to write everything by hand.

      =>________________________________________________________________________            

Rewrite the sentences, using but not altering the bold word in brackets, so that the meaning stays the same.

1. People say he is a good doctor.                                                                            (It)

      =>________________________________________________________________________            

2. Nobody told me about it.                                                                                      (not)

      =>________________________________________________________________________            

3. I don't like pupils asking stupid questions.                                                       (being)

      =>________________________________________________________________________            

4. She doesn't like the others laughing at her.                                                        (laughed)

      =>________________________________________________________________________            

5. The boss had his secretary type all these letters.                                               (typed)

      =>________________________________________________________________________            

6. They employed the workers to repair their house.                                           (had)

      =>________________________________________________________________________            

7. They say that elephants never forget.                                                                  (forget)

      =>________________________________________________________________________            

8.I don't want the others think of me as a burden.                                                 (thought)

      =>________________________________________________________________________            

9. People thought that he killed his wife.                                                               (been)

      =>________________________________________________________________________            

10. People believe that 13 is unlucky number.                                                      (be)

      =>________________________________________________________________________            

11. People expect that the strike will begin tomorrow.                                        (begin)

12. I remember that someone gave me that shirt on my birthday.                      (remember)

      =>________________________________________________________________________            

13. He recommended using secondhand clothes.                                                (should)

      =>________________________________________________________________________            

14. John made me leave soon.                                                                                   (I)

      =>________________________________________________________________________            

15. It is your duty to do your homework before class-time.                                (You)

      =>________________________________________________________________________            

Both sentences in each pair have the same meaning. Complete the second sentences:

1. The crowd was slowly filling the huge stadium.

      =>The huge stadium___________________________by the crowd.

2. The invention of the computer simplified the work of accountants.

      =>Since the computer________________the work of accountants______________ simplified

3. “I'd take out some travel insurance if I were you, Mr. Smith.

      =>Mr. Smith_______________________take out some travel insurance.

4. Someone used a knife to open this window.

      =>This window ________________________________a knife.

5. You will hear from us when we have finished dealing with your complaint.

      =>After your complaint________________________you will hear from us.

6. An announcement of their engagement appeared in the local paper.

      =>Their engagement ______________________ in the local paper.

7. Nobody ever heard anything of David again.

      =>Nothing ____________________David again

8. They paid Sheila $1000 as a special bonus.

      =>$ 1000__________________________Sheila as a special bonus.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

1. I still can't believe it! My wallet ______last night.

      A. was stolen               B. was stealing.                  C. stolen                              D. stole

2. The current computer problem is__________ by some experts in the country.

      A. studying                  B. being studying              C. being studied                D. been studied

3. Something funny__________ in class yesterday.

      A. happened                B. was happened               C. happens                         D. is happened

4. The child's arm was swollen because he _________by a bee.

      A. stung                        B. had stung                       C. had been stung             D. had being stung

5. Today, many serious childhood diseases ___________by early immunization.

      A. are preventing        B. can prevent                    C. prevent                           D. can be prevented

6. I________ with you on that subject.

      A. am agree                  B. am agreed                      C. agreeing                         D. agree

7. Many U. S. automobiles __________in Detroit, Michigan.

      A. manufacture                                                         B. have manufactured     

      C. are manufactured                                                D. are manufacturing

8. Let's go ahead and do it now. Nothing_________by waiting.

      A. accomplishes                                                       B. accomplished               

      C. has accomplished                                                D. will be accomplished

9. "When _______?" "In 1928."

      A. penicillin was discovered                                 B. did penicillin discovered

      C. was penicillin discovered                                  D. did penicillin discover

10. In recent years, the government has imposed pollution controls on automobile

manufacturers. Both domestic and imported automobiles must_________ antipollution devices.

      A. equip with               B. be euipped with           C. equip by                        D. be equipped by

11. A shortage of water is a problem in many parts of the world. In some areas, water_________from the ground faster than nature can replenish the supply.

      A. is being taken         B. has been taking             C. is taking                         D. has taken

12. Vitamin C__________ by the human body. It gets into the blood stream quickly.

      A. absorbs easily         B. is easily absorbing       C. is easily absorbed        D. absorbed easily

13. "When can I have my car back?" "I think it'll _____________late this afternoon."

      A. finish                        B . be finished                    C. have finished                D. be finish

14. I didn't think my interview went well, but I guess it must have. Despite all my anxiety, I_____for the job I wanted. I'm really going to work hard to justify their confidence.

      A. was hiring               B. hired                               C. got hiring                       D. got hired

15. My country___________the pursuit of world peace,

      A. is dedicating to       B. is dedicated to              C. is dedicating by            D. is dedicated by

16. About 15,000 years ago, northern Wisconsin___________under ice a mile deep.

      A. buried                      B. was burying                  C. was buried                    D. had buried

17. Ed was new on the job, but he quickly fit himself into the___________routine of the office.

      A. established              B. establishing                   C. establishes                     D. establish

18. The Mayan Indians ______In an accurate and sophisticated calendar more than seven centuries ago.

      A. were developed                                                  B. developed                    

      C. are developed                                                      D. have been developed

19. George is______________Lisa.

      A. marry with              B. marry to                         C. married with                 D . married to

20. The rescuers_____________for their bravery and fortitude in locating the lost mountain climbers.

      A. were praised           B. praised                           C . were praising               D. praising

21. It’s hard to believe that this film ____ completely by computer.                          

      A. has been generated                                             B. has generated

      C. was been generating                                           D. was to generate

22. I wish my father had bought me a new mobile phone instead of having it ____ like that.

      A. to repair                   B. repaired                         C. repairing                        D. being repaired

23. Smith _______ an actor years ago.                                                                     

      A. is said to be                                                          B. was said being             

      C. was said have been                                             D. is said to have been

24.In the US the first stage of compulsory education _______ as elementary education.

      A. to be generally known                                       B. is generally known      

      C. generally known                                                 D. is generally knowing  

25.Although he tried his best, he could not make his voice _______.               

      A. to be heard              B. to hear                            C. hearing                           D. heard

26.The preparations _______ by the time the guests _______.                            

      A. had been finished / arrived                               B. have finished / arrived        

      C. had finished / were arriving                              D. have been finished / were arrived

27. As students _______ to study remotely from home, away from on-campus welfare and

support, taking their studies and exams online, they are increasingly becoming prey to essay mills.

      A. have forced             B. were being forced         C. have been forced          D. had been forced 28. Something _______ immediately to prevent teenagers from _______ in factories and mines.

      A. should be done / being exploited                    B. we should do / exploiting

      C. should do I be exploited                                    D. should have done / exploited

29. Thousands of lives lost to air pollution, inactivity and unhealthy diets ________ each year if the UK takes the action needed to tackle climate change.

      A. couldn’t be saved   B. could save                     C. could be saving            D. could be saved

30. No longer _______ in our office since it _______.

      A. have typewriters been used / computerized 

      B. typewriters have been used / was computerized

      C. have typewriters been used / was computerized

      D. typewriters have been used / computerized

31. While there’s disagreement over its origins, the caste system _______ in a legal treatise called Manusmriti, dating from about 1,000 B.C.                                                             

      A. had been formalized                                          B. was formalized            

      C. has been formalized                                           D. is formalized

32.The little girl started crying. She ____ her doll and no one was able to find it for her.

      A. has lost                     B. had lost                          C. was losing                     D. was lost

33.The pilot project is believed _______ emissions, noise pollution and damage to road

surfaces.                                                                                                                                

      A. to be reduced          B. to reducing                    C. to reduce                        D. to have been reduced

34. The first movie – length cartoon ______________, “Snow White and the Seven Dwarfs;”set the standard for later full-length features such as “The Lion King” and “Pocahontas”.

      A. that released ever   B. which ever released     C. ever released                 D. released whatever

35. Surely the virtual elimination in our society of most fatal diseases, rising life-expectancy and falling mortality ______ us up?

      A. should be cheered                                              B. should be cheering

      C. should is cheering                                               D. should have been cheered

36. Today more than twice as many tabloids _____ than the so-called “quality press” titles such as The Times or The Guardian.

      A. have been sold       B. are sold                          C. had been sold               D. will be sold

37. It ________ that cyberspace institutions or online universities will replace traditional educational establishments.

      A. anticipates               B. has anticipated              C. is anticipated                D. will be anticipating

38. Virtual classrooms ______ towards promoting the acquisition of knowledge as a lifelong endeavour, which occurs through global collaboration.

      A. will be geared         B. will gear                         C. is geared                        D. gear

39. Such terrible acts of child abuse ________ thanks to the continuing protests of the online community.

      A. were ignored          B. won’t ignore                  C. were not ignored          D. are ignored

40. I will never forget _______ to the Royal Garden Party, where superb cuisines were served amid luxurious surroundings.

      A. inviting                    B. to invite                          C. to be invited                  D. being invited

41. His responsibilities ________ welcoming visiting dignitaries from foreign countries.

      A. included                  B. were included               C. will be including          D. had been included 42. Though most fairy tales have happy endings, the stories usually deal with frightening situations - children ______ in the forest, terrifying giants, cruel stepmothers.

      A. are abandoned        B. abandoned                     C. will abandon                 D. had abandoned

43. __________ long thought to have no bones, small amounts of bone were recently found at the bases of the teeth in some species.

      A. Although sharks were                                        B. Despite sharks being

      C. In spite of sharks are                                           D. Nevertheless, sharks

45. Humans are pumping water out of the ground faster than it ________.

      A. can’t be replenished                                           B. can be replenished

      C. can replenish                                                        D. can have been replenished

46. When archaeologists discovered the ruins of the Olympic Stadium, interest in the Games__________.

      A. was renewed           B. were renewed               C. they were renewed      D. renewed

47. Most people are unable to discern a difference between the usual city drinking water and the treated wastewater, although it is actually _______ for industrial purposes.

      A. intending                 B. being intend                  C. have intended               D. intended

48. Visitors must sign in and show identification before ________ into the building.

      A. allowing                  B. being allowed               C. having allowed             D. to be allowed

49. The party _______ when she left.                                                                      

      A. had no sooner started                                         B. had hardly been started      

      C. had hardly started                                               D. had no sooner been started

50. It ______ that children are frequently better at recalling televised stories they have

watched compared to those they have simply heard.                                         

      A. has been noted       B. been noted                     C. is noting                         D. notes

Mn giúp mik nha! Tại mik cần gấp

1. There are some _____________ to every grammatical rule.     EXCEPT

2. The engineering sector achieved significant _____________ last year.     GROW

3. I have a _____________ of old records from my grandma.     COLLECT

4. He'll _____________ be coming later.     SURE

5. Eric Clapton's guitar solos are _____________.     LEGEND

6. It was one of the most _____________ plays I've seen recently.     ENJOY

7. In her time, Marilyn Monroe was a very _____________ actress.     GLAMOUR

8. It's_____________to tell whether he's lying or not.     POSSIBLE

9. He's no worldwide star, but he had very humble _____________.     BEGIN

10. They took _____________ of noise levels inside the building.     MEASURE

11. He's a really _____________ person.     RELY

12. She made several excellent _____________ in her essay on Charles Dickens.     OBSERVE

13. Watching TV shows in English is definitely very _____________ to improve your listening skills.     USE

14. The Internet is probably one of the best _____________ ever.     INVENT

15. The boat was 16 feet in _____________.     LONG

16. Both _____________ and fluency are important when speaking a foreign language.     ACCURATE

17. You shouldn't have said that! It was a totally _____________ remark.     APPROPRIATE

18. Since the earliest times, civilisations have understood the _____________ of time.     IMPORTANT

19. Doing puzzles keeps our brains fit and _____________.     HEALTH

20. As well as gaining _____________, by doing puzzles we give our brains a good workout.      SATISFY

21. The most _____________ games have sold in the millions.     SUCCESS

22. People have _____________ that doing puzzles is good for you.     COVER

23. It's easy to find a _____________ to the problems posed.     SOLVE

24. There has been an _____________ in the power of their brains.     IMPROVE

25. Some _____________ argue that the brain gets better at a task the more it repeats it.     SCIENCE

26. The improvement in the _____________is something that happens naturally.     PERFORM

27. It remains _____________ whether puzzles are actually helping to boost brainpower or not.     CERTAIN

28. According to _____________, most people sleep less than 8 hours every day.     SEARCH

29. The advice passed down to our grandparents may contain some _____________.     TRUE

30. A good example is the_____________between being cold and catching a cold.     RELATION

31. These high-heeled shoes are _____________ for such rough terrain.     SUIT

32. Colds are caused by viruses, so in the _____________ of a virus, you can't catch a cold.     ABSENT

33. You're too young. This film is _____________ for children your age.     APPROPRIATE

34. _____________ now think that we may have viruses in our bodies already.     SCIENCE

35. In cold weather, for example, blood vessels in the nose get smaller to stop heat escaping. _____________, this also allows the cold virus to attack the nose or throat more easily.     FORTUNATE

36. Victoria Falls in Africa is one of the most _____________sights in the world.     SPECTACLE

37. It's also an _____________ place for water sports.     CREDIBLE

38. We need you to provide an accurate _____________ of the situation.     DESCRIBE

39. On arrival, it's the noise that makes the greatest_____________.     IMPRESS

40. The _____________ landscape is also well worth a visit.     SURROUND

41. There's a post office a bit _____________down the road.     FAR

42. Six months after the accident, he still has _____________ walking.     DIFFICULT

43. I can't play tennis that well because I'm a _____________.     BEGIN

44. Don't go there. It's _____________.     DANGER

45. Read this. It'll be very _____________ for your trip to Australia.     USE

46. I didn't find him that _____________, but my friend did.     ATTRACT

47. The school has a _____________ for being very up-to-date with technology.     REPUTE

48. These are _____________clothes and that's why they are very expensive.     DESIGN

49. I left the party because it was _____________ noisy in there.     EXTREME

50. I had no _____________but to tell him.     CHOOSE

51. This cloth is made from _____________ fibers.     NATURE

52. If you want to take care of the environment, it's important to _____________.     CYCLE

53. In the next few years, _____________ will hopefully have found a cure for malaria.     SCIENCE

54. According to the _____________, the epidemic started in Kuala Lumpur.     SEARCH

55. _____________from family and friends can lead to feelings of anxiety.     ISOLATE

56. I was _____________ to understand what the problem was.     ABLE

57. There will be a _____________of solo games and competitive games available.     MIX

58. Participants will later be asked for _____________ on the event.     FEED

59. It was an_____________reunion and we were all really touched when we remembered how we had met.     EMOTION

60. I am writing to ask for further _____________ on your Open Day.     INFORM

61. This took place at the end of the _____________ century.     TWENTY

62. People really _____________the party.     JOY

63. Meditation is great as a means of _____________.     RELAX

64. This method is a lot more _____________than the previous one.     EFFECT

65. Picasso was a Spanish _____________who also lived in France.     ART

66. There has been little _____________ in the negotiations since January.     MOVE

67. _____________ enough, I didn't know she already had four children.     SURPRISE

68. His voice was_____________recognizable.     INSTANT

69. The only cure for _____________ is creativity.     BORE

70. This is a textile company _____________ in denim.     SPECIAL

71. _____________is a part of life, but you have to be able to enjoy the others too.     SAD

72. Without that, I wouldn't be happy even if I was the _____________ man in the world.     RICH

73. The music in the festival was so loud. It was _____________!     DEAF

74. I don't think my marks can get _____________ because I already study to the best of my abilities.     HIGH

75. The _____________ river fish in Europe lives in Spain!     LARGE

76. Passeig de Gràcia is being _____________ so there is more room for people to walk on the pavement.     WIDE

77. I can _____________ that if you study you will have no problems passing this test.     SURE

Giải phương trình: \(\sqrt{6-x}=3x-4\)

Cho biểu thức A = \(\left(\dfrac{\sqrt{x}+2}{x-1}-\dfrac{\sqrt{x}-2}{x-2\sqrt{x}+1}\right):\dfrac{4x}{\left(x-1\right)^2}\)

a) Rút gọn A.

b) tính giá trị của A biết \(\left|x-5\right|=4\).

Bài 1 Rút gọn: D = \(\sqrt{\sqrt{5}-\sqrt{\sqrt{3}-\left(29-12\sqrt{5}\right)}}\)