Tam giác ABC với AM,BN,CP là các trung tuyến.D,E,F lần lượt là trung điểm của AM,BN và CP.Với O bất kì ,đẳng thức đúng là :

Ông B là một người khỏe mạnh và tốt bụng trong thôn H. Nhưng trong một lần xây nhà, giàn giáo đổ sập,khiến ông bị ngã và bị thương ở chân. Sau một thời gian đi chữa, vết thương lành lặn, nhưng cũng từ đó ông phải đi tập tễnh. Mỗi lần thấy ông, một số trẻ trong thôn lại chế giễu, nhại dáng đi của ông. a) Em có nhận xét gì về hành vi của một số trẻ em trong tình huống trên? b) Em sẽ làm gì nếu chứng kiến cảnh ghế giễu của các trẻ em trên?

Exercise 3 1. They will ask you a lot of questions at the interview. a. You will be asked a lot of questions at the interview. b. You will be asked a lot of questions at the interview by them. a. A lot of questions will be asked you at the interview. d. A lot of questions will be asked at the interview. 2. Nobody told me that George was ill. a. I was told that b. I wasn't told that George was ill c. George wasn't told to be it d. George was told not to be ill 3. His colleagues gave him a present when he retired. a. He was given a present when he retired. b. A present was given by his colleagues when he retired. c. He was given a present by his colleagues when he retired. d. A present was given him when he retired. 4. We will send you the results as soon as they are ready. a. You will be sent the results as soon as they are ready. b. You will be sent the results as soon as they are ready by us. c. The results will be sent you by us as soon as they are ready. d. The results will be sent you as soon as they are ready by us. 5. I think they should have offered Tom the job. a. I think Tom should have been offered the job by them. b. I think Tom should have been offered the job. c. I am thought they should have offered Tom the job. d. I think the job should have been offered Tom 6. They say that many people are homeless after the tsunami. a. They say many people to have been homeless after the tsunami. b. They say many people to be homeless after the tsunami. c. Many people are said to have been homeless after the tsunami. d. Many people are said to be homeless after the tsunami. 7. They know that the Prime Minister is in favour of the new law. a. The Prime Minister is known to have been in favour of the new law. b. They know the Prime Minister to be in favour of the new law. c. The Prime Minister is known to be in favour of the new law. d. They know the Prime Minister to have been in favour of the new law. 8. They expect that the government will lose the election. a. The government is expected to have lost the election. b. The government is expected to lose the election. c. They expect the government to lose the election. d. They expect the government have lost election. 9. They think that the prisoner escaped by climbing over the wall. a. The prisoner is thought to escape by climbing over the wall. b. The prisoner is thought escaped by climbing over the wall. c. The prisoner is thought having escaped by climbing over the wall. d. The prisoner is thought to have escaped by climbing over the wall. 10. They believer that the thieves got in through the kitchen window. a. The thieves are believed to have got in through the kitchen window. b. The thieves are believed to get in through the kitchen window. c. They believe the thieves got in through the kitchen window. d. They believe the thieves have got in through the kitchen window.

Làm và dịch giúp mình cần gấp ạ!!

Cho biểu thức A= (x+y) ² -(x-y) (x+y) a) Rút gọn biểu thức A b) Tính giá trị biểu thức A tại x=1 và y=2

11. They report that over 200,000 people were killed in the tsunami. a. Over 200,000 people are reported to have been killed in the tsunami. b. Over 200,000 people are reported to be killed in the tsunami. c. Over 200,000 people are reported to have killed in the tsunami. d. Over 200,000 people are reported to kill in the tsunami. 12. They say that three men were arrested after the explosion. a. Three men are said to be arrested after the explosion. b. Three men are said to have been arrested after the explosion. c. Three mend are said to have arrested after the explosion. d. Three men are said to arrest after the explosion. 13. The boys carried the box into the room. a. The box was carried by the boys into the room. b. The box was carried into the room. c. The box into the room was carried by the boys. d. The box was carried into the room by the boys. 14. Tom bought that book yesterday. a. That book was bought yesterday by Tom. b. That book was bought by Tom yesterday. c. That book yesterday was bought by Tom. d. That book was bought yesterday. 15. The old man treated the little boy badly. a. The little boy was treated by the old man badly. b. The little boy was badly treated by the old man. c. The little boy badly was treated by the old man. d. The little boy was treated baldly by the old man. 16. They didn’t offer Ann the job. a. The job wasn't offered Ann by them. b. Ann wasn't offered them the job. c. Ann wasn't offered the job by them. d. Ann wasn't offered the job. 17. Scientists have not produced a miraculous drug which can SIDA a miraculous drug_____ a. has not been produced by scientists which can cure SIDA. b. has not been produced by scientists who can cure SIDA. c. which can cure SIDA has not been produced by scientists. d. who can cure SIDA have not been produced by scientists. 18. The letter that I received yesterday is from my sister. a. I was received that the letter is from my sister. b. The letter that was received yesterday is from my sister. c. The letter yesterday that is from my sister is received by me. d. I received yesterday that the letter is from my sister. 19. People say that he is the most experienced teacher of English. a. He is said to be the most experienced teacher of English. b. He is said the most experienced teacher of English. c. He is to be said the most experienced teacher of English. d. That he is the most experienced teacher of English is said by people. 20. He is teaching me speaking and listening a. Me is being taught speaking and listening. b. I speaking and listening are being taught. c. I am being taught listening and speaking. d. Speaking and listening is being taught me.

Chỉ cần câu 4 thôi Gấp lắm hứa vote 5 sao

behaviour attitude temper mood manner manners 1 My parents had to see the headmaster because of my bad ___________________ in class. 2 After the argument, Jake was in a bad ___________________ and wouldn't speak to anyone. 3 If Betty wants to keep her job, she must change her ___________________ towards her boss. 4 Where did you learn such excellent table ___________________?  5 The children like him because of his gentle ___________________. 6 Cliff is so calm that I have never seen him lose his ___________________. 7 What you're saying should be done in a professional ___________________.

Exercise 3 1. They will ask you a lot of questions at the interview. a. You will be asked a lot of questions at the interview. b. You will be asked a lot of questions at the interview by them. a. A lot of questions will be asked you at the interview. d. A lot of questions will be asked at the interview. 2. Nobody told me that George was ill. a. I was told that b. I wasn't told that George was ill c. George wasn't told to be it d. George was told not to be ill 3. His colleagues gave him a present when he retired. a. He was given a present when he retired. b. A present was given by his colleagues when he retired. c. He was given a present by his colleagues when he retired. d. A present was given him when he retired. 4. We will send you the results as soon as they are ready. a. You will be sent the results as soon as they are ready. b. You will be sent the results as soon as they are ready by us. c. The results will be sent you by us as soon as they are ready. d. The results will be sent you as soon as they are ready by us. 5. I think they should have offered Tom the job. a. I think Tom should have been offered the job by them. b. I think Tom should have been offered the job. c. I am thought they should have offered Tom the job. d. I think the job should have been offered Tom 6. They say that many people are homeless after the tsunami. a. They say many people to have been homeless after the tsunami. b. They say many people to be homeless after the tsunami. c. Many people are said to have been homeless after the tsunami. d. Many people are said to be homeless after the tsunami. 7. They know that the Prime Minister is in favour of the new law. a. The Prime Minister is known to have been in favour of the new law. b. They know the Prime Minister to be in favour of the new law. c. The Prime Minister is known to be in favour of the new law. d. They know the Prime Minister to have been in favour of the new law. 8. They expect that the government will lose the election. a. The government is expected to have lost the election. b. The government is expected to lose the election. c. They expect the government to lose the election. d. They expect the government have lost election. 9. They think that the prisoner escaped by climbing over the wall. a. The prisoner is thought to escape by climbing over the wall. b. The prisoner is thought escaped by climbing over the wall. c. The prisoner is thought having escaped by climbing over the wall. d. The prisoner is thought to have escaped by climbing over the wall. 10. They believer that the thieves got in through the kitchen window. a. The thieves are believed to have got in through the kitchen window. b. The thieves are believed to get in through the kitchen window. c. They believe the thieves got in through the kitchen window. d. They believe the thieves have got in through the kitchen window.

Exercise 3 1. They will ask you a lot of questions at the interview. a. You will be asked a lot of questions at the interview. b. You will be asked a lot of questions at the interview by them. a. A lot of questions will be asked you at the interview. d. A lot of questions will be asked at the interview. 2. Nobody told me that George was ill. a. I was told that b. I wasn't told that George was ill c. George wasn't told to be it d. George was told not to be ill 3. His colleagues gave him a present when he retired. a. He was given a present when he retired. b. A present was given by his colleagues when he retired. c. He was given a present by his colleagues when he retired. d. A present was given him when he retired. 4. We will send you the results as soon as they are ready. a. You will be sent the results as soon as they are ready. b. You will be sent the results as soon as they are ready by us. c. The results will be sent you by us as soon as they are ready. d. The results will be sent you as soon as they are ready by us. 5. I think they should have offered Tom the job. a. I think Tom should have been offered the job by them. b. I think Tom should have been offered the job. c. I am thought they should have offered Tom the job. d. I think the job should have been offered Tom 6. They say that many people are homeless after the tsunami. a. They say many people to have been homeless after the tsunami. b. They say many people to be homeless after the tsunami. c. Many people are said to have been homeless after the tsunami. d. Many people are said to be homeless after the tsunami. 7. They know that the Prime Minister is in favour of the new law. a. The Prime Minister is known to have been in favour of the new law. b. They know the Prime Minister to be in favour of the new law. c. The Prime Minister is known to be in favour of the new law. d. They know the Prime Minister to have been in favour of the new law. 8. They expect that the government will lose the election. a. The government is expected to have lost the election. b. The government is expected to lose the election. c. They expect the government to lose the election. d. They expect the government have lost election. 9. They think that the prisoner escaped by climbing over the wall. a. The prisoner is thought to escape by climbing over the wall. b. The prisoner is thought escaped by climbing over the wall. c. The prisoner is thought having escaped by climbing over the wall. d. The prisoner is thought to have escaped by climbing over the wall. 10. They believer that the thieves got in through the kitchen window. a. The thieves are believed to have got in through the kitchen window. b. The thieves are believed to get in through the kitchen window. c. They believe the thieves got in through the kitchen window. d. They believe the thieves have got in through the kitchen window.