Sentence Transformation
1. Why he didn't admit it isa problem the concerns us
=> The problem
2. All of those present were in agreement with the proposal
=> Everyone
3. What a pleasant surprise to meet you again!
=> It's
4. I was finally able to convince him of ít value
=> I finally succeeded
5. Could you explain it to me again, please?
=> Would 
6. I'd prefer you to sign the check now
=> I'd rather 
7. She was so good to me that I'll always remember it
=> I'll always
8. I am very pleased that we shall meet again soon
=> I'm looking
9. On arrival at the shop, the goods are inspected carefully
=> When
10. What is the difference between "Salary" and "Wage"?
=> How
11. It doesn't matter you are very busy, he always insists on coming with you
=> No

Use other words or phrases that can replace for underlined words without changing the meaning of sentence
1. When we boil water at 100 degrees celsius, water will change into vapour
2. Light that is brought into one tiny point can burn paper easily
3. The authority will build some hotels for motorists along the super highway
4. The farmers can add some subtances to soil to make their land more fertile
5. He spent a great sum of money unreasonably in one day

Rewrite the sentence
1. I not only think she'll come, but I know she'll come
=> Not only
2. Though she was so poor, she always helped the others
=> Poor
3. Those who have the determination to overcome difficulties will surely get what they want
=> Those who are
4. He doesn't know much about the job he's going to apply for
=> He has
5. He's not a professional singer, but he sang this song beautifully
=> Despite

I/ Sentence Building
1. She/ good/ sing/ dance
2. His talk/ interesting/ we listened/ an hour
3. Last/ holidays/ in Sam Son
4. We/ no sooner/ left/ house/ it/ to rain
5. left/ light/ all night
6. Mysteries/ seem/ beyond/ understanding
7. Peter/ regret/ not/ attend/ lecture/ last
8. time/ train/ leave/ passengers/ board
9. We/ upset/ of / failure
10. Policeman/ talk/ man/ car/ damage/ accident
11. I/ spare time/ read
12. despite/ enthusiasm/ he/ not succeed
13. more/ we/ travel/ learn
14. mathematics/ role/ lives
 

Tìm các cặp số nguyên (x;y) thỏa mãn : \(x^2y+xy-2x^2-3x+4=0\)