giải thích tại sao trên trái đất có nhiều dạng địa hình khác nhau?

1. Your hair needs cutting. → It's time you ___________________________________________ 2. I last saw her three years ago. → I haven't ___________________________________________ 3. The teacher will explain the lesson until all the students understand it. → The lesson ___________________________________________ 4. They sell jeans all over the world. → Jeans ___________________________________________ 5. People are going to build a new library in the area. → A new library ___________________________________________ 6. The clown made us laugh a lot. → We ___________________________________________ 7.You have to finish your homework on time. → Your homework ___________________________________________ 8. My mother open the shop at six o'clock. → The shop ___________________________________________ 9. We didn't remember her name. → Her name ___________________________________________ 10. The boss will hold the meeting before the weekend. → The ___________________________________________ 11. No one asked you about that accident. → You ___________________________________________ 12. The government has provided the victims with food. → The victims ___________________________________________ 13. It has been five years since Mr. Tom started to play the guitar. → Mr. Tom has ___________________________________________ 14. I haven't eaten this kind of food before. → This is the first time ___________________________________________ 15. The number of people killed in industrial accidents this year is 15. → Already this year, 15 ___________________________________________ 16. My daughter has learned English for 3 years so far. → It's ___________________________________________ 17. When did you start learning English? → How long is ___________________________________________ 18. She hasn't flown to Sydney with him since February. → The last time ___________________________________________ 19. It's been two years since we visited Ha Noi. → The last time ___________________________________________ 20. How long is it since they bought the house? → When ___________________________________________ 21. It's a long time since he stopped smoking cigarettes. → He hasn't ___________________________________________ 22. Minh's friend began to watch that films half an hour ago. → Minh's friend has ___________________________________________ 23. Mai last met that teacher when she was a little girl. → Mai hasn't ___________________________________________ 24. My sister hasn't been to England for three years. → The last time my sister ___________________________________________ 25. I haven't corresponded with my close friend for four months. → It's four months ___________________________________________ 26. The last time she flew to Sydney with him was in February. → She hasn't ___________________________________________ 27. When did you start learning English? → How long is ___________________________________________

cho tam giác abc nhọn (AB<AC) gọi D,E lan luot la trung điểm cua AB,AC a)chứng minh BDEC là hình thang b)gọi F là trung điểm cua BC tứ giác DEFB là hình gì vì sao c)gọi O là trung điểm của DF.cm 3điểm 0,B,E thẳng hàng d)AO cắt BC tại M .cmr BC=3BM

viết đoạn văn phân tích nhân vật lão hạc ( nghe rõ chưa ) 🙃

chọn câu đúng có cùng nghĩa với câu đã cho : 1.Maths is the most difficult subject of all A.Maths is very difficult of all B. No subject is not as difficult as Maths C.Nothing is more difficult than Maths. D.No subject is more difficult than Maths. 2.what a pity i'm not tall enough to join the army A.i am sorry for join the army B.i wish i were taller C.i am not tall enough , so i don't want to join the army D.i wish i am taller to join the army 3."do you know Lan's address ?" - He asked me A. he asked me for Lan's address B.he asked me if someone knew Lan's address C.he asked me if i know Lan's address D.he asked me if i knew Lan's address 4.our garden was badly damaged in last week's storm A.last week the garden has been damaged B.last week's storm badly damaged our garden C.the storm has damaged our garden badly D.the storm was damaged our garden last week 5.the test we did last time was more difficult than this one A.we did a difficult test last time and a more difficult than this one B.this test is not as difficult as the one we did last time C.we had a more difficult test last week than this one D.the test we have this time is not difficult at all

V. ReauI me paSSage anlu CHUUSE tme Dest an ..... centuries before the Áo Dài. As Vietnam expanded soutlIWul U, AU Tewhat e gradually became associated specifically with northern women. Áo Tứ Thâ 0ose rk colors, expect when it was to be worn at special occasions such as festivals ( Áo Tứ Thân is (27)............. one of Vietnam's enduring 28) of peasant women, which explains why it was often made with plainza he (30), A. 9)..... ddings. Regardless of its many different forms, the basic Áo Tứ Thân consists (31)... enaS is tied a lowing outer tunic reaching almost the floor, a long skirt, worn under the tunic a A. belt. Áo Tứ Thân is modern-day Vietnam tends to be extremely colorful. D. described en bodice worn as an undergarment by women, A silk sash (32)........ C. symbolized C. men 7.A. mentioned B. considered D. woman B.A. girls .A. skirt B. women D. blouse C. dress C. and C. of C. whose B. shirt A. or B. but D. so A. with B. from D. at 1. who B. whom D. which eir original eanings (2

- Vai trò của hiệp ước Pa-ri - Vai trò của Liên Xô đối với cách mạng thế giới sau chiến tranh thế giới thứ hai - Quan hệ giữa ASEAN với 3 nước Đông Dương

Cho tam giác ABC, Ax là tia phân giác của BAC. Từ C kẻ đường thẳng song song với Ax, cắt tia đối của tia AB tại D. Kẻ tia Ay là phân giác của DAC. Trên nửa mặt phẳng bờ AD không chứa điểm C, vẽ tia Az sao cho góc zAD = ADC. a) Chứng minh góc ADC = ACD. b) Chứng minh Ay vuông góc DC. c) Chứng minh Ax và Az là hai tia đối nhau. vẽ hình hộ mình thôi không phải giải đâu

Cho hình tứ diện ABCD. Goi M, N lần lượt là trung điểm của các cạnh BC, CD. Gọi I là một điểm bên trong tam giác ABD. Tìm giao điểm của đường thẳng IN với mặt phẳng (ABC). Các bạn có thời gian thì giúp tôi câu b nhé 😅, tôi xin cảm ơn 😀👍👌👌👍

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