1. Nam started studying English 5 years ago → Nam has .................................................................................................................................. 2. We started to play soccer an hour ago → We have .................................................................................................................................. 3. She started reading this novel a week ago → She has .................................................................................................................................... 4. He started writing this book last year → He has .................................................................................................................................... 5. My sister began playing badminton in 1986 → My sister has .......................................................................................................................... 6. Hoa began playing piano when she was ten → Hoa has ................................................................................................................................... 7. Mr Hai began to be a doctor when he was 21 → Mr Hai has .............................................................................................................................. 8. Hung stopped playing soccer last year → Hung hasn’t ............................................................................................................................ 9. I stopped smoking 2 years ago → I haven’t .................................................................................................................................. 10. She stopped writing when she moved to England → She hasn’t ............................................................................................................................... 11. My brother stopped working in this factory last month → My brother hasn’t ................................................................................................................... 12. Maria stopped planting flowers 10 years ago → Maria hasn’t ............................................................................................................................ 13. Ba started building this hotel a year ago. → Ba has… ................................................................................................................................ 14. She stopped playing volleyball a year ago → She hasn’t .............................................................................................................................. 15. We began listening to music at 4pm → We have… .............................................................................................................................. 16. I left there last month → I haven’t ................................................................................................................................. 17. When did you live here? → How long ...............................................................................................................................? 18. When did you know her? → How long ...............................................................................................................................? 19. How long have you written this book? → When ....................................................................................................................................? 20. Ba has worked in this factory since he was 18 → Ba started ..............................................................................................................................?

1) Tìm thương C C của phép chia A = x^{3}+2x^{2}-5x-6 A=x 3 +2x 2 −5x−6 cho B =x^{2}+x-6 B=x 2 +x−6 . Đáp số: C= C= . 2) Quy đồng mẫu thức hai phân thức sau \frac{1}{x^{2}+x-6} x 2 +x−6 1 ​ và \frac{1}{x^{3}+2x^{2}-5x-6} x 3 +2x 2 −5x−6 1 ​

Câu 1: Sự chuyển biến của phong trào yêu nước Hà Nội từ 1919-1930 được thể hiện ở những điểm nào? Câu 2: Địa phương em có những di tích lịch sử cách mạng nào? Sưu tầm những đóng góp của địa phương em với thắng lợi của cách mạng tháng Tám năm 1945?

ae giúp mình hen mình sẽ cho 5 sao từ bài 5 đến bài 9

Chứng tỏ x=2 là nghiệm của đa thức D(x)

ai giải dùm em câu công nghệ này với ạ em đang làm kiểm tra huhu

Làm giúp em phần 1 bài này vs ạ

giúp em lí 11 với ạ : 1 ống dây 100cm có 1000 vòng dây. Tiết diện ngang của ống dây là 20cm^2.Hệ số tự cảm của ống dây là?

I. Rewrite the sentences without changing the meaning. 1. We have languages. We use them for communication. If we didn’t ………………………………………………………………………… 2. Five students will be awarded a present. Their test results are excellent. Five ………………………………………………………………………………… 3. We have senses. They allow us to learn languages.If we didn’t ………………………………………………………………………… 4. Our sense of sight allows us to read the written language. If we didn’t ………………………………………………………………………. 5. They are looking for the girl and her dog. They have lost the way in the forest. They ……………………………………………………………………………………... II. Use the words or phrases given to write meaningful sentences about the ways to improve your spoken English in a conversation. 1. most important/ goal/ speaking English/ communicate. ……………………………………………………………………………………………………… 2. Although/ speaking English fast/ make/ you/ sound/ native speaker,/ it/ make/ other people/ difficult/ understand you. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 3. Thinking/ English/ thing/ you can practice/ all/ time/ because/ it/ really important/ when/ speak/ English. ……………………………………………………………………………………………………… 4. If you/ forget/ word/ we/ stop/ sentence/ middle/ or/ use/ other words/ describe it. ……………………………………………………………………………………………………… 5. Self-confidence/ help/ speak better/ every English conversation. ………………………………………………………………………………………………………If we didn’t ………………………………………………………………………… 4. Our sense of sight allows us to read the written language. If we didn’t ………………………………………………………………………. 5. They are looking for the girl and her dog. They have lost the way in the forest. They ……………………………………………………………………………………...

bài 3,4, https://img.hoidap247.com/picture/question/20200420/tini_1587369751509.jpg