17. Though Lan doesn’t earn much money, she spends like a millionaire. (OF) => Lan spends like a millionaire …………………………………………………………………. much money.

18. The girl has just gone out. Do you know her? (WHO) -> Do you know ………………………………………………. gone out ?

THE CHILDREN / RAIN, / PLAYING / DESPITE / ARE / THE / STILL / HARD / DESPITE / FOOTBALL / BẮT ĐẦU CÂU VỚI ""DESPITE""

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

61. No one wants to live in a polluted city, ________? A. Do they B. don’t they C. does he D. doesn’t he

62. I think city dwellers can enjoy an exciting nightlife, _________ ? A. Don’t you think B. don’t I C. Can’t they D. can they

63. There’s hardly anything that can be done to reduce pollution, _________ ? A. Isn’t there B. is there C. can it D. can’t i

64. You have to wear uniform when going to work, _________ ? A. Haven’t you B. have you C. do you D. don’t yo

65. We are supposed to submit the assignment by Friday, ________ A. Don’t we B. are we C. aren’t we D. do we

66. Put these flowers near the window,________ ? A. Will you B. would you C. could you D. all are correct

Cho S = 3 / 10^2  + 3 / 11^2 + 3 / 12^2 +......+ 3 / 101^2. Chứng tỏ rằng S<1/3