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27.The time machine will be shown to the public when it is finished

28. He was delighted that his aunt sent him a letter 

29.People recycle old car tires to make shoes and sandals

30.I'm very sad not to be accepted in that group

31.Vinh is always forgetting his homework

32.Do you mind helping me put the chairs away?

33.I'd rather not to make any noise,I'm very tired.

34.I have never used such a good computer before

35.It's ages since he last chatted with his classmates through the internet

36.Trung was given a microcomputer from his parents on his birthday

37. This is the first time he has played a computer game.

38.The last time we saw her was when we left university

39.My brother enjoys walking in the rain

40.The Staue of Liberty was presented to the United States by France in 1876

41. They started to learn English ten years ago.

42.I last wrote to you a month ago.

43.Let's go to the cinema

44.I remembered and so did she

45.In spite of having a lot of difficultie, she managed to sell the house.

46.She couldn't go to school because of the heavy rain

47.If you practice speaking everyday, you can improve your English

48.Nga is looking forward to meeting her aunt again soon

49.It is the firsttime I have eatenthis kind of food

................mỏi tay :')...........................