viết một đoạn văn bằng tiếng anh ít nhất 6 câu có câu có cấu trúc: + sth can/can't +be+ v-ed/p2 +sth should/shouldn't +be+ v-ed/p2 +sth must/mustn't +be+ v-ed/p2 +they/it +say/think/believe/...+that s+v+o

bài 6 4. Choose the correct answer. 1. Was Tom there when you arrived?” - “Yes, but he home soon afterwards.” A. goes B. went C. had gone D. were going 2. Before Jennifer won the lottery, she any kind of contest. A. hasn’t entered B. doesn’t entered C. wasn’t entering D. hadn’t entered 3. “Who was the woman in red dress? Did you know?” - “No, I who she was. I her before.” A. didn’t know - hadn’t seen B. didn’t know - hasn’t seen C. hadn’t known - hadn’t seen D. don’t know - hasn’t seen 4. It’s two years Joe. A. that I don’t see B. that I haven’t seen C. since I didn’t see D. since I saw 5. The man sitting next to me on the plane was nervous because he before. A. hasn’t flown B. didn’t fly C. hadn’t flown D. wasn’t flying 6. They in Scotland for ten years. Now they live in London. A. lived B. have lived C. has been living D. had lived 7. As soon as Laura the house, it started to rain. A. has left B. was leaving C. had left D. had been leaving 8. Sorry we’re late, we the wrong turning. A. had taken B. were talking C. took D. are talking 9. We in New York for ten years and then we here in 1987 A. have lived - moved B. lived - moved C. lived - had moved D. had lived – moved 10. When Martin the car, he took it out for a drive. A. had repaired B. has repaired C. repaired D. was repairing 11. We them before the reception yesterday. A. haven’t met B. hadn’t met C. didn’t meet D. wouldn’t meet 12. Karen didn’t want to come to the cinema with us because she the film. A. has already seen B already had seen C. had already seen D. saw 13. The man looked familiar. I him somewhere before. A. saw B. have seen C. had seen D. see 14. Last night a tornado swept through Rockville. It everything in its path. A. destroyed B. was destroyed C. had destroyed D. has destroyed 15. When we the bill, we left the restaurant A. had paid B. were paying C. paid D. had been paid

Cho hình vuông ABCD cạnh bằng a, I là trung điểm của cạnh AB. Trên tia đối của tia CD, CB, DC, AD lần lượt lấy các điểm M, N, P, Q sao cho CM=a, CN=2a, DP=2a, AQ=3a a) CMR tam giác IAD, MCN và DPQ là các tam giác đồng dạng b) Tam giác MNQ là tam giác gì? Tứ giác MNPQ là hình gì? c) CMR các đường thẳng ID đi qua trung điểm E và F của NP và MQ d) CM I là trung điểm của NQ e) Gọi S là giao điểm của QM và PN, R là trung điểm của PQ. C/m SR, QN và CD đồng quy

căn bậc hai(x^2 + 5*x -6) = 2*x+3

- Cách c/m: Để c/m dd là đường trung trực của đoạn thẳng AB, ta c/m dd chứa hai điểm cách đều A và B hoặc dùng định nghĩa đường trung trực. dd nghĩa là méo gì

Cho tam giác ABC vuông cân tại A, đường trung tuyến AM(M thuộc BC). Lấy điểm P trên cạnh AB sao cho P khác A và B, vẽ đường thẳng song song với BC và AM, hai đường thẳng này cắt AM và BC lần lượt ở N và K. a) Chứng minh PNMK là hình bình hành b) Trên tia đối của tia MA lấy điểm D sao cho MD=MA. Chứng minh ABDC là hình chữ nhật c) Chứng minh PK+PN=AD/2

bài 6 TA , giúppp VI. Complete the sentence with the past simple or past perfect form of the verb in brackets. 1. They (live) in Paris for 10 years before they (move) home. 2. As soon as I (download) the document, I knew I (make)a mistake. 3. Mary (ring) John’s doorbell at 8:15 yesterday but John (already/ leave) the house. 4. By the time the firemen (arrive), the fire (destroy)three houses. 5. Our economy (not stand) a chance of developing before thegovernment (adopt) the open-door policy. 6. When I last (speak) to her, she still (not finish)her assignment. 7. Nobody (come) to the meeting because Angela (forget)to tell them about it. 8. She (go) to Disneyland three times when she (be) a little girl. 9. After I (complete) the form, I (give) it to the secretary. 10. Sarah (drive) three hundred miles by the time she (arrive)in Tacoma.

giúp vs ạ nhớ giải chi tiết giúp mình ạ

9x^2-(y^2-4y+4) phân tích thành nhân tử

Cho A= 2mủ0+2mủ1+2mủ2+...+2mủ8 và B=4×2mủ7. So sánh A và B Giúp mik vs mn ơi