rearrange the sentences to make suitable conversation by writing the correct number (from 51 to 55) in the box.
51).................A. Because our major sources of energy are running out while the solar energy is abundant and unlimited.
52).................B. I know it is also clean and sake to the environment. But does it cost a lot of money to install the solar panels on the roofs?
53).................C. I don't think so. The solar panels are becoming cheaper and easy to install.
54).................D.I think that solar energy can be an alternative sources of energy in the near future.
55).................E. Why do you think so?
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change the following sentences into the passive voice.
46. people will develop alternative sources of energy.
⟹Alternative sources.....................................................
47. with that device people will changeinto electricity.
⟹ with that device the wave energy.................................................
48. people will construct more wind turbines in that area to produce electricity.
⟹ more wind turbines........................................
49. scientists will find solutions to reduce pollution in our city.
⟹ solutions................................................
50. governments will make more regulations to reduce industrial pollution.
⟹ more regulations.............................................
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Complete the sentences with the suitable verb from the box in the future continuous.
41. what clothes do you think she.............when she arrives?
42. my uncle can't come to your party tomorrow night because he.............night.
43. linda.............in ha noi around march
44. you..............french in quebec because local people do it, too.
45. at this time tomorrow evening...............computer games in my bedroom.
Bài 2: Cho các số 53 và 77 cho cùng một số, ta đc số dư lần lượt là 2 và 9. Tìm số chia ấy.
Bài 3: Chứng tỏ rằng
a) (5+52+53+54+55+...+529+530) chia hết cho 6
b) (a+a2+a3+a4+...+a29+a30) chia hết cho (a+1) (a thuộc N)
c) (3+32+33+34+35+...+329+330) chia hết cho 4
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