Rút gọn biểu thức a, 7x(4x-2)-(x-3)(x-1)+16x

Các câu hỏi liên quan

21. I’m going to buy a computer. I haven't got much money. (even though)  ………………………………………………………………………………. 22. I intend to go for a walk this morning. It's raining. (even if)  ………………………………………………………………………………. 23. I'd like to help you. I'm afraid I won't be able to. (much as)  ………………………………………………………………………………. 24. Your design is excellent. It isn't suitable for our purposes. (while)  ………………………………………………………………………………. 25. I try hard to play the piano. I don't seem to improve. (although)  ………………………………………………………………………………. 26. The play was wonderful. The film was a commercial failure. (Whereas)  ………………………………………………………………………………. 27. I took twenty driving lessons to pass my driving test first time.(so that/in order that) 28. I arrived at the cinema early so as not to miss the beginning of the film. .(so that/in order that) 29. We stood up in order to get a better view of what was happening. .(so that/in order that) 30. Mr Jones bought a second car for his wife to learn to drive. .(so that/in order that) 31. 5 1 spoke slowly and clearly because I wanted the audience to understand me. .(so that/in order that) 32. I'm going to sign the agreement immediately. You might change your mind. (in case)  ......................................................................................... 33. Take this key with you. You might not be able to get into the house. (in case)  ......................................................................................................................... 34. We keep a fire extinguisher in the kitchen. There might be a fire. (in case)  ............................................................................................................... 35. Go by train. There might be a lot of traffic on the roads. (in case)  .................................................................................................................................. 36. I'm going to take my passport with me. I might need it. (in case)  ......................................................................................................... 37. We were late. We missed the first act of the play. (so…..that…)  ... ......................................................................................................... 38. I was working hard. I forgot what the time was. (so…..that…)  ......................................................................................................... 39. There was a delay. We missed our connecting flight. (such…..that…)  ......................................................................................................... 40. We've had difficulties. We don't think we can stay in business. (such…..that…)  ......................................................................................................... 41. John works hard. Susan works hard. ( as ... as)  ......................................................................................................... 42. John is less intelligent than Susan. (not so ... as)  ......................................................................................................... . 43. This computer holds less information than that one. (not ... as much ... as) .  ......................................................................................................... 44. The film 'Superman 1' is enjoyable. 'Superman 2' is enjoyable, too. (as ... as)  ......................................................................................................... 45. I don’t feel well enough to go out tonight. I will stay home and rest. (thus)  ......................................................................................................... 46. Milky Way includes the Sun and its solar system. It contains about 400 billion other stars. (furthermore)  .............................................................................................. 47. I can speak English. I can speak Spanish too. (not only……….but also)  .............................................................................................. 48. I will not talk to you if you don’t apologize to me. (Unless)  .............................................................................................. 49. She has a bad cold. She still wants to attend the class today. (Although)  .............................................................................................. 50. The boxer was very strong. He knocked out all of his opponents in the first round. (so…….that…….) 

DÙNG TỪ CHO SẴN Ở TRONG NGOẶC ĐƠN ĐỂ NỐI 02 MỆNH ĐỀ 1. The taxi stopped at the station. Two men got out of it. (and)  ……………………………………………………………………………. 2. You can give me some advice. Your colleague can. (Either you ... or)  Either …………………………………………………………………………….  Either ……………………………………………………………………………. 3. We got ready to get on the train. It didn't stop. (but)  ……………………………………………………………………………. 4. No one was in when we called. We left a message. (so)  ……………………………………………………………………………. 5. We didn't want to get home late after the film. We went straight back. (so)  ……………………………………………………………………………. 6. The old lady was nervous. She wasn't used to strangers calling late at night. (for)  ……………………………………………………………………………. 7. I've always wanted to live in the country. My parents prefer to live in town. (but)  ……………………………………………………………………………. 8. The letter has been lost. The postman has delivered it to the wrong address. (or)  ……………………………………………………………………………. 9. For a moment the top of the mountain was visible. A cloud covered it. (and then)  ……………………………………………………………………………. 10. Jane was a successful career woman. Her mother wanted her to be a housewife. (yet)  ……………………………………………………………………………. 11. I lost a lot of weight. I was ill. (when)  ………………………………………………………………………………. 12. I phoned home. I arrived in the airport building. (immediately after)  ………………………………………………………………………………. 13. She had already opened the letter. She realized it wasn't addressed to her. (before)  ………………………………………………………………………………. 14. The building had almost burnt down. The fire brigade arrived. (by the time)  ………………………………………………………………………………. 15. We realized that something had gone wrong. We saw him run towards us. (as soon as)  ……………………………………………………………………………… 16. I won't know if I have got into university. I will get my exam results. (until)  ………………………………………………………………………………. 17. I'II give him your message. He will phone. (as soon as)  ………………………………………………………………………………. 18. We should visit the Duty Free Shop. Our flight will be called. (before)  ………………………………………………………………………………. 19. I'II be dead. They will find a cure for the common cold. (by the time)  ………………………………………………………………………………. 20. You'll get a surprise. You will open the door. (the moment)  ……………………………………………………………………………….