USE OF ENGLISH (giải giúp mình với)

26. It's a good idea to ______________ your files onto a memory stick.

A. ran off​B. back away​C. set aside​D. back up

27. Everyone in the class is expected to ______________ these discussions.

A. participate in​B. participate on​C. take up​D. take in

27. New technology has ______________ a massive impact on our lives.

A. taken​B. set​C. had​D. made

29. I had to drive to the factory to pick up my brother, ______________ car wouldn’t start.

A. who his​B. who she​C. who’s​D. whose

30. The charity exists to ______________ the needs of elderly people.

A. take​B. make​C. meet​D. do

31. I ______________ the file to Cloud Storage as soon as I had finished working on it.

A. retrieved​B. downloaded​C. uploaded​D. surfed

32. Dave was attacked ______________ a masked man on the way home. The police found him lying unconscious on the pavement after being hit ______________ a branch.

A. by|with​B. by|by​C. with|by​D. by|from

33. Students were encouraged to enroll in this online ______________ .

A. course​B. resource​C. education​D. material

34. The colourful clothes ______________ together with the white-coloured clothes.

A. should wash​C. should not be washed

B. should not wash​D. should have been washed

35. ______________ enables teachers and students located thousands of miles apart to communicate and interact with each other.

A. Online test​B. Virtual education​C. Cloud library​D. Educational app

36. The roof ______________ under the weight of snow.

A. was collapsed​B. collapsed​C. has been collapsed D. will be collapse

37. The main bedroom ______________ 12ft by 15ft.

A. is measured​B. measures​C. is measuring​ D. was measured

38. Airline passengers no longer have to turn off all ______________ devices while on the plane.

A. electric​B. electrical​C. electronic​D. electrician

39. I’ve always ______________ well with Henry.

A. got up​B. got on​C. got away​D. got off

40. I’m very careful ______________ washing my hands before eating.

A. on​B. for​C. in​D. about

41. I remember ______________ pictures of him when I was a child.

A. to see​B. seeing​C. to seeing​D. to have seen

42. The country has the world's largest ______________ of coal.

A. reserves​B. reservation​C. number​D. conservation

43. I have registed for you. If you want to ________, just type tour name in the username and 123 in the password box.

​A. look for B. look at C. sign in​ D. sign up

44. I appreciated ______________ the opportunity of studying abroad by the government.

A. being given​B. giving​C. to be given​D. to being given

45. She smiled as she remembered the quiet scholar with ______________ she had shared a love of books.

A. whose​B. which​C. that​D. whom

46. AR app captures students’ attention and help them _________ the lessons.

A. concentrate onto B. keep with C. keep off​ D. concentrate on

47. Pollution can have disastrous effects on the delicately balanced ______________.

A. environment​B. ecosystem​C. energy​D. forest