Một máy bay với vận tốc 860km/ giờ được quãng đường 2150km hỏi máy bay đến nơi lúc mấy giờ nếu nó khởi hành lúc 8 giờ 45 phút

5. A doctor is a man_______ helps cure people A. who B. which C. where D. whose 7. I like reading books ______ tell about different peoples and their cultures. A. who B. whom C. which D. where 8. “Buy me a dictionary on your way back,______?” A. will you B. don’t you C. can’t you D. are you 9. My father is a very ¬¬¬_______ driver. He never has any accidents. A. carelessly B. carefully C. careful D. careless 10: “Why do you come here late?”, she asked me. A. She asked me why I came there late. B. She asked me why I come there late. C. She asked me why I came here late. D. She asked me why you came there late. 11. Mary asked me if I _______ to school on foot or by bike the day after. A. go B .would go C . went D. had gone 12. The weather was awful_______ we had to cancel our trip. A. so B. but C. however D. although 13. Do you livein a __________________ house in the city ? A. threefloors B. three-floors C. three -floor D. floor-three 14. “ Thank for your help, Judy”- “_______ A.You are welcome B. with all my heart C. never mind me D. same to you 15. Scientists and engineers have invented devices to remove ______ from industrial wastes. A. polluted B. pollute C. polluting D. pollutants Giải thích nha mọi người

II. Write about from 80 100 words about the festival which you attended (1.5) ………………………............................................................................................................……………………………............................................................................................................………………………....................................... ....................................………………………............................................................................................................… ………………………............................................................................................................………………………....... …............................................................................................................………………………....................................... ....................................………………………............................................................................................................… ………………………............................................................................................................………………………....... ………………………............................................................................................................……………………………............................................................................................................………………………....................................... ....................................………………………............................................................................................................… ………………………....................................

Make meaninhful sentences from the words or phrases given

Giải giúp mình với ạ. Rõ ràng nha. Mình cảm ơn.

Nếu dùng 48 hình vuông xếp lại thì ta có được bao nhiêu hình chữ nhật

5. Cho cấp số cộng (u)n có u3 + u13 = 80 . Tổng 15 số hạng đầu tiên của cấp số cộng đó bằng A. 600. B. 630. C. 800. D. 570 Gấp ạ!!1

20000000+20000000x+x(20000000+20000000x)=24200000

Ahmed Malik (0) ...sell... (sell) newspapers and sweets from his shop in north London. He (1) ..................................... (have) the shop for thirty years. His wife (2) ..................................... (work) in the shop with him and they (3) ..................................... (employ) two assistants. In 2005, they (4) ..................................... (buy) another shop in another part of London and their son now (5) ..................................... (manage) that for them. Emily Saunders is the head of English in a large secondary school. ‘I (6) ..................................... (come) to this school ten years ago as a teacher,’ she told us. ‘Since last September, I (7) ..................................... (be) head of the English department. I (8) ..................................... (not teach) as many classes as I used to, but I have other responsibilities. It’s a very good school and I’m very happy here.’ David O’Brien is a driver for the Post Office. ‘I (9) ..................................... (collect) mail from post offices in my van. I (10) ..................................... (work) for the Post Office for twenty-three years. I was a postman until 1990 and then I (11) ..................................... (get) my own van. I (12) ..................................... (enjoy) the job more since I became a driver. It’s more responsible and you don’t get wet!’

Hấp thụ 3,36 lít khí CO2 (đktc) vào dung dịch Ca(OH)2 dư thu được m gam kết tủa trắng. Giá trị của m là bao nhiêu