làm hộ mik vs, lm đúng mik cho 5 sao + cảm ơn

Help me !!!! Xin cảm ơn trước ạ !

Câu 4. Một ca nô chạy trên một khúc sông từ A đến B. Khi đi xuôi dòng thì mất 5 giờ, khi đi ngược dòng thì mất 6 giờ .Tính khoảng cách từ bến A đến bến B, biết vận tốc của ca nô khi xuôi dòng hơn vận tốc của ca nô khi ngược dòng là 4 km/ giờ?

21. Although she was not beautiful, she took part in a beauty contest. She wasn’t beautiful but……………………………………… 22. It was raining, so we decided to postpone our camping. Since………………………………………………………………… 23. She wants them to sing a song. She suggests they……………………………………………… 24. She couldn’t come to class because of her illness. As…………………………………………………………………… 25. She couldn’t join us because she was busy. She was busy, so………………………………………………….. 26. Because of having a lot of difficulties, she managed to sell the house. As……………………………………………………………….. 27. Shall we go to the cinema tonight? What about………………………………………………..? 28. They requested us to leave the place at once. They suggested we……………………………………….. 29. I stay at home because it is raining. As ……………………………………………………….

Cho 2 số tự nhiên a,b thỏa mãn: a-b-2ab+b^2=0 Chứng minh: a-b và a-b+1 là số chính phương

Sửa sai và giải thích tại sao? 1)People is such an inexpensive means of transport that people take them very often. 2)She has been playing as a professional tennis player from 1990s.

Mk cần gấp !! Đề bài là chuyển sang câu bị động và tìm thì của mỗi câu ạ :))

11. He uses plastic bags to wrap food. I suggest…………………………………………………… 12. She always turns on the lights when going to bed. I suggest………………………………………………….. 13. His motorcycle uses too much gas. I suggest…………………………………………………. 14. They use electricity to catch fish I suggest……………………………………………….. 15. There are many cracks in your pipes I suggest………………………………………………… 16 I don’t want to watch TV for recreation I suggest……………………………………………….. 17. They use many ordinary 100 watt light bulbs I suggest……………………………………………… 18. He is having a toothache I suggest………………………………………………. 19. He want to go to Australia for studying I suggest……………………………………………….. 20. They use too much coal, gas and oil.

1.People have used the Internet all over the world. The Internet has…………………………………………. 2. I think it would be a good idea to take the train. I suggest……………………………………………… 3. She went out, but she didn’t say a word. She went out without…………………………………. 4. It is intersting to go out with friends at weekend. Going out ……………………………………………. 5.I often go to bed late. I am used …………………………………………….. 6. What about going to the cinema tonight? Shall we…………………………………………………… 7. “ Why don’t you go with me?”, he asked me He asked me why…………………………………………. 8. She enjoys going swimming She is interested in……………………………………….. 9. Does he spend most of his free time playing video game? Does it take……………………………………………….? 10. Does it take you 3 hours to do this task? Do you spend ……………………………………………?

bài 3 cho tam giác ABC vuông cân tại A.trên nửa mặt phẳng bờ BC không chứa đỉnh A , vẽ BD vuông BC và BD=BC a) tứ giác ABCD là hình gì vì sao b) biết AB=5cm.tính CD vẽ hình nữa nha