bn nào giỏi sinh 9. Giúp mk vs ạ

Một thửa ruộng hình chữ nhật có chu vi dài 280 m chiều rộng bằng 3/4 chiều dài người ta đem trồng lúa trên thửa ruộng đó cứ 100 mét vuông thu được 62 kg thóc A,Tính chiều dài và chiều rộng của thửa ruộng B. Mọi người ta đã thu hoạch được bao nhiêu tạ thóc trên thửa ruộng đó C, người ta lấy 50% số thóc đó đem bán lấy tiền dễ chi tiêu giá tiền một kg thóc là 3000₫ tính số tiền thóc bán được Tìm số tự nhiên có 6 chữ số biết chữ số ở hàng đơn vị là 4 Nếu chuyển chữ số hàng đơn vị lên đầu thì được số mới gấp lần 4 số cũ

Dòng chảy đều trong cống tròn có đường kính D = 2.2m, tải một lưu lượng là Q = 4m/s. Biết cống có độ nhám n = 0.016, độ dốc đáy cống i = 0.0008. Hãy xác định độ sâu mực nước h (m) trong cống? ai giúp em với ạ câu này với ạ em cần gấp

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Fill in the blank with “for” or “since”. 1. It has been raining ...................... lunchtime. 2. My boss will go away ...................... the next ten days. 3. I’m staying in England ...................... a year. 4. She has lived in London ...................... 1985. 5. Please hurry up! We have been waiting ...................... an hour. 6. I have known her ...................... January. 7. Nam’s father has worked in this company ...................... 20 years. 8. Have you learned English ...................... a long time? 9. I haven’t seen Tom ...................... we left school. 10. The house is very dirty. We haven’t cleaned it ...................... years. 11. My sister has been a student ...................... two years. 12. We’ve lived here ...................... 1990. 13. I haven’t seen Linh ...................... my birthday party. 14. She has been away ...................... a year. 15. We’ve already waited ...................... five days. 16. They haven’t had any rain ...................... very long time. 17. That building has been there ...................... the 19th century. 18. I have known them ...................... many years. 19. They have only been there ...................... a few minutes. 20. My brother works for a company called FPT. He has worked for them ...................... he graduated from university. Put the verbs in brackets in the present perfect or the simple past tense. 1. I ...................... (do) all the housework. The flat is really clean now. 2. He ...................... (write) a novel for two years, but he ................................. (not finish) it yet. 3. My brother ...................... (leave) home 10 years ago. I ................................. (never/ meet) him again since then. 4. I like your car. How long ...................... you ...................... (have) it? 5. What ...................... you ...................... (do) last weekend? ...................... (play) golf? 6. Mai ...................... (buy) a new dress last week, but she ...................... (not wear) it yet. 7. Mr. Quang ...................... (teach) Math in this school since he ...................... (graduate) from the university in 1989. 8. ...................... you ...................... (hear) of Agatha Christie? She ...................... ( be) a novels writer. You ...................... (read) any of them 9. When I ..................... (get) home last night, I ..................... (be) very tired and I ...................... (go) straight to bed. 10. Daniel ...................... (earn) some money last week. But I’m afraid he ..................................... (already/ spend) it all. Put the verbs in brackets in the present perfect or the simple past tense. 1. We (never watch) that TV programme. 2. We (watch) a good programme on TV last night. 3. He (read) that novel many times before. 4. He (read) that novel again during my last vacation. 5. I (have) a little trouble with my car last week. 6. However, I (have) no trouble with my car since then. 7. I (not see) John for a long time. I (see) him 3 weeks ago. 8. The school bell (ring) . We must go now. 9. I (meet) Mary last night. She (become) a very big girl. 10. He is very thirsty. He (not drink) since this morning. Give the correct form of the verbs in the present perfect. 1. Tom (see) this film before. 2. I (finish) my exercise already. 3. They (live) here since 1990.

Mng giúp mik nhanh nhé chỉ cần đáp án thôi không cần giải thích vì sao nhé 10h30p mik cần nhé cảm ơn các bạn trước

NĂm nay mẹ 73 tuổi. Khi tuổi mẹ bằng tuổi con hiện nay thì tuổi mẹ hơn 7 lần tuổi con lúc đó là 4 tuổi. Tính tuổi con hiện nay

" Trong tất cả mọi sự lãng phí, đáng trách nhất là lãng phí thời gian". (Vauvenagues) Trình bày suy nghĩ của em về câu nói trên. Viết đoạn phê phán và liên hệ bản thân cho đề trong hình ảnh nha ko chép mạng nếu chép mạng sẽ báo cáo vi phạm Viết dài tí đừng viết ngắn quá đc rồi

Làm nhanh nha!! Không giải thích cũng được! Thank !

Ex 3: Supply the correct verb forms in brackets. 1. It took me two hours ……(do) this work. 2. When did you finish……. (paint) the kitchen? 3. I began……….. (learn) English when I was seven. 4. Some people like…….. (have) breakfast in bed, but I don’t. 5.Don’t forget…………(post) this letter for me. 6. What do you want………(do) tonight? 7. I love……(listen) to pop music. 8. She continued…….(talk) during the whole meal. 9. They spent all morning……….(learn) the lesson. 10. I am fond of ……….(go) to the movie Saturday. Ex 4: Give the correct verb forms in brackets. 1. Students stopped………….(make) noise when the teacher came in. 2. She couldn’t bear…….. (study) all day. 3. I remember (meet)…… …you somewhere last month. 4. Ann likes (cook)……but hate (wash)……up. 5. He’ll try (not make)………the same mistake again. 6. Would you mind (buy)……….me a newspaper? 7. Would you like…………….(have) the next dance with me? 8. Did you remember (phone)………..Ann? Oh, no I completely forgot it. 9. I hope (not do)………that tiring work again. 10. It is no use (advise)……..him. He never allows anybody (give)……advice. 11. He always avoid (meet)……..me in the street. 12. My parents decided (take)……….a taxi because it was late. 13.My grandfather gets used to (get)…………..up early in the morning. 14. Do you often practice (speak)…….English? 15. He spent hours (try)……………….(repair)………his car. 16. That shirt makes you (look)………..younger. 17. Mrs. Green prefers (watch)…………..TV to (go)………….to the cinema. GIÚP MK VỚI MNN