Tính giá trị bthuc : 99x^100 +99x^99 +99x^98 +... + 99x^2 +99x +99 với x =100

tại sao dùng on foot mà không phải by foot

II. Mark the letter A, B, C or D on your answer sheet that is best made from the given prompts in the following sentences. 46. The internet / be / convenient way / get / information A. The internet is a convenient way to get information. B. The internet is convenient way of getting information. C. The internet is a convenient way getting information. D. The internet is convenient way to get information. 47. She / asked / me / where / I / come / from. A. She asked me where I come from. B. She asked to me where I came from. C. She asked me where I came from. D. She aske me where did I come from. 48. We / start / walk / village / thirty minutes. A. We started to walk about the village about thirty minutes. B. We will start walking of the village for about thirty minutes. C. We were starting to walk to the village for about thirty minutes. D. We started to walk into the village for about thirty minutes. 49. My father / often / give / me / advice / how / save / energy. A. My father often gives me advice on how to save energy. B. My father often gives to me advice on how to save energy. C. My father often gives me advice how about saving energy. D. T My father often gives me advice about how to save energy. 50. Everybody / like / independent. A. Everybody likes independent. B. Everybody likes to be independent. C. Everybody like to be independent. D. Everybody like being independent. 11. Shall we go out for a ride this weekend? How about ………………………………………………. 12. I usually got up late last year, but this year I often get up early.  I used to ……………………………………………. I used to get up late last year. 13. Mary always went swimming after school last year.  Mary used to ……………………………………….. 14.Let’s visit our form teacher . → What about ………………………….. ? 15.Why don’t we go swimming ? → How about ……………………………..? 16.What about going to the cinema ? → I suggest that ………………………… 18. Learning English is interesting . → It’s ……………………………………………….. 19. He spent 20 minutes playing soccer last Sunday . → It took …………………………………………… 20.I would like you to help me move this table. →Do you mind……………………………………………………… 21. When I was young, my family lived in the countryside. →My family used to………………………………………………… 22. He is fond of practicing speaking English with foreign people. →He enjoys………………………………………………………………. 23. We have learnt English for 3 years. →We began…………………………………………………………………. We began to learn English 3 years ago. 24. John smoked a lot a year ago, but now he doesn’t smoke any more.  John used to...................................................... 25. I suggest that we should close all the windows in winter.  I suggest ............................................................ 26. We have learned English for 4 years.  We began ............................................................... 27. The children are interested in going swimming in the river.  The children enjoy ................................................................. 28. I think it would be a good idea to take the train.  I suggest …………………………………….. 29 Shall we go for a picnic this weekend?  How about …………………………………...

Có 4 lọ mất nhãn là A, B, C, D. Mỗi lọ chứa một trong các dung dịch sau: AgNO3, ZnCl2, HCl và Na2CO3. Biết rằng lọ A tạo chất khí với lọ C nhưng không phản ứng với lọ B, lọ A và lọ B tạo kết tủa với lọ D. Hãy xác định các chất trong các lọ A, B, C, D và viết PTHH xảy ra.

Giải giúp mk với ạ đang cần gấp !!

II/ Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. 21. Mary: “I passed the driving test yesterday.” John: “________!” A. With pleasure B. Congratulations C. Have a good time D. You’re welcome 22. Anna: “Would you like some more chicken?” John: “______.I’m full.” A. Yes, please B. No, thanks C. Yes, I would D. No, I wouldn’t 23. Man: “Can I help you with your luggage. Madam?" Woman: “¬¬______.” A. Oh, thank you B. Oh, you're night. C. It must be boring. I'm afraid D. Poor you! 24. Student 1: “Excuse me, is anybody sitting here?” Student 2: “____________” A. No, thanks. B. Yes, I am so glad. C. Sorry, the seat is taken. D. Yes, yes. You can sit here. 25. John: Shall I get a taxi for you? - John’s lecturer: ______. A. Yes, I’d love to B. Oh, that would be nice C. Let’s do D. Yes, why not? PART B: READING I. Read the passage and choose the best answer to each of the blanks If you are (31) ______ to someone's house for dinner in the United States, you should (32) _______ a gift, such as a bunch of flowers or a box of chocolates. If you give your host a wrapped (33) ______, he or she may open it in front of you. Opening a present in front of the gift-giver is considered (34) _______. It shows that the host is excited about receiving the gift and wants to show his/her appreciation to you immediately. (35) ______ the host doesn't like it, he or she will tell a "white lie" and say how much they like the gift to prevent the guest from feeling bad. 31. A. called B. invited C. calling D. inviting 32. A. take B. give C. bring D. make 33. A. gift B. gifts C. flower D. flowers 34. A. funny B. sad C. rude D. polite 35. A. Although B. But C. Because D. So II. Read the following passagc and choose the item (a, b, c, or d) that best answers each of the questions about it Last year, we had a nice holiday. My friend and I went to the seaside for a month. I had been to the seaside several times before, but this was the first time for my friend. Naturally, it was the great event for him. Finally, the day came. It was a fine morning. We got up very early because we wanted to leave home after breakfast. We made the journey by car. We reached the seaside at noon. We spent many hours on the beach. We enjoyed making castles and channels in the sand. People said we ought to spend at least a few weeks at the seaside. If we could stay longer, so much the better. 36. How long did the writer and his friend spend at the seaside? A. A week B. A few weeks C. A month D. A few months 37. Who went to the seaside the first time? A. The writer B. The writer and his friend C. The writer's family D. The writer’s friend 38. What was the weather like on the day they started their journey to the seaside? A. It was bad B. It was rainy C. It was snowy D. It was nice 39. How did they travel to the seaside? A. By car B. By train C. By bus D. By air 40. When did they reach the seaside? A. At 8 o 'clock B. At 12 o'clock C. At 4 pm D. At 9 pm I. Finish each of the following sentences in such a way that it means the same as the sentence printed before it 41. “ Do you have a camera?” she asked. A. She wanted to know if I have a camera. B. She wanted to know if I had a camera. C. She asked me whether I did have a camera. D. she asked me whether did I have a camera. 42. The exam lasted three hours. A. We finished the exam at three o'clock. B. We had three-hours exam. C. It was a three-hour exam. D. It takes us three hours to take the exam. 43. They are watering the flowers in the garden. A. The flowers are being watered in the garden. B. They need some water and flowers in the garden. C. There are some water on the flowers in the garden. D. They are putting the flowers in water in the garden. 44. Unlike her friends, Jane prefers an independent life. A. Jane doesn't like her friends because she prefers an independent life. B. Her friends live in an independent life and Jane doesn't like it. C. Jane doesn't like her friends to live in a dependent life. D. Jane prefers an independent life but her friends do not. 45. When they arrived, the good seats were already taken. A. They didn't get good seats because they arrived too late. B. They arrived late enough to get good seats. C. They had to stand for a long time to have good seats. D. They couldn't get good seats although they arrived early

Giúp mik vs!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!đi nha😥😥😥😥😥😥

Giúp mik câu 7,8 ( có giải thích ) 🙏

Mong ae giúp và chỉ cách lm nữa ạ

Mọi người giải giúp mình bài 11 và 12 với ạ