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quynhtran4022001
2 năm trước
với a,b,c ≥ 0. Chứng minh a, a+ b ≥ 2 √ab b, a + b + c >= √ab + √bc + √ac
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III. Make questions for the underlined words or phrases 1. The party wil start at seven o’clock in the morning. Từ gạch chân: at seven o’clock in the morning. 2. I’m talking to Mrs. Nga. Từ gạch chân: Mrs. Nga 3. It’s five kilometers from our house to the mountain. Từ gạch chân: five kilometers 4. Her family name is Tong. Từ gạch chân: Tong. 5. They live at 83 Son Tay Street. Từ gạch chân: at 83 Son Tay Street. 6. Vietnamese teenagers help old people by cleaning their yards or painting their houses. Từ gạch chân: by cleaning their yards or painting their houses. 7. Viet doesn’t want to go to my house because he has too many assignments. Từ gạch chân: because he has too many assignments. 8. It is Thursday tomorrow. Từ gạch chân: Thursday 9. Lien’s brother is practicing the guitar now. Từ gạch chân:the guitar 10. My uncle and I go to the tennis club once a week. Từ gạch chân: once a week. 11. They will fly to Brazil next month. Từ gạch chân:to Brazil 12. We are going to visit the Natural Science Museum next weekend. Từ gạch chân: next weekend. 13. You should invite our former classmates to your birthday party. Từ gạch chân:our former classmates 14. Trung usually borrows his brother’s motorbike. Từ gạch chân:his brother’s 15. Our children have to do a lot of homework every day. Từ gạch chân:a lot of 16. The souvenir shop is in front of the book store. Từ gạch chân:in front of the book store. 17.It’s five kilometers from my house to the supermarket. Từ gạch chân:five kilometers 18. It takes Mr. Lan fifteen minutes to walk to work Từ gạch chân:fifteen minutes 19. We go to Ho Chi Minh City by train. Từ gạch chân: by train. 20. Trung will mail his letter to Bruce, his pen pal. Từ gạch chân:Bruce, his pen pal.

Ai giúp mình vs ạ (5*) 25. “Do you know how far the drug store is?” The foreigner asked me. The foreigner ________________________________________________________ 26. “Will you please water the flowers for me tonight, Jim?” said the old woman. ____________________________________________________________________ 27. I said to John, “Why aren’t you looking for a job?” ____________________________________________________________________ 28. Nancy said: “Why didn’t you call me, John?" Nacy wanted___________________________________________________________ 29. “Remember to give your parents my regard, Lan.” Nam said. Nam said______________________________________________________________ 30. “Teacher, give us better marks, please.” the puplis said. The pupils_____________________________________________________________ 31. Mr Smith said to her: "Where will you go on your vacation?” Mr Smith asked_________________________________________________________ 32. He said: “I am very proud of my parents, Daisy.” He told________________________________________________________________ 33. “Be modest if you are a good pupil, Lan.” said her mother. Lan’s mother told her_____________________________________________________ 34. “Can I use your phone?” he said to me. He asked______________________________________________________________ 35. "Whose car did you borrow last night?” I said to him. I wondered_____________________________________________________________ 36. "If I had any money, I'd buy you a drink." she said to me. ____________________________________________________________________ 37. "If I were you, I'd stop smoking." she said to her brother. ____________________________________________________________________ 38. "Can you lend me ten pounds?" said the boy to me. The boy asked _______________________________________________________ 39. “Don’t play with the matches!” I said to Jack. I warned______________________________________________________________ 40. "Don't swim out too far, boys." said the pool guard. The pool guard warned__________________________________________________

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