Câu 28: Đốt cháy hoàn toàn 31,8 gam một ankylbenzen Y cần dùng 70,56 lít O2 (đktc). Công thức phân tử của Y là A. C8H10. B. C9H12. C. C10H14. D. C7H8

1. Alexander Graham Bell invented the telephone The telephone was………… 2. Let's meet outside the theater? Why……………………………… 3. Sao Mai Movie theater is near my aunt’s house Sao Mai Movie theater isn’t………… 4. Peter is too young to see the horror film Peter is not………………………………. 5. Remember to turn off the light before going out Don’t…………………………… 6. That girl is very intelligent What…………………………………………………… 7. I intend to come over to pick you up I am…………………………………………. 8. How about going to the theater to night? Let’s……………………………………… 9. The table is too heavy to lift up. The table isn’t light………………………………. 10. The book was interesting. I read it twice The book was …………………………..

Liệt kê tất cả các việc làm theo thông điệp 5k của bộ y tế

Mình đang cần gấp nên nhanh và đúng là đc ạ. 1. We ________ finished eating dinner. had not not had 'd had not 2. Had they _____ to her before? spoke spoken spoked 3. You _____ not left yet. would 'd would had 4. I had never _____ her before. see saw seen 5. We arrived at 8:05, but the train _____ already left. has have had 6. Sarah thought she ________ to that zoo before. has been had be had been 7. Nobody explained why the project had ________ on time. n't been completed not completed n't complete 8. He _____ us the item had been shipped. told say asked 9. Dad explained ________ his job due to stress. why he quitted that he had quit that he'd quite 10. Where _____ the security guard gone? had have did

B1 : Tìm x , biết a. 8x + 15 - 3x = -400 b. -32x + 12x - 5x = 900 c. ( x + 2) × ( x - 5 ) = 0 d. ( x^2 - 25 ) × ( x^2 + 25 ) = 0

giúp mình, mình cần ngay và luôn, vote 5sao cho

Dựa vào hiểu biết của em hãy viết đoạn văn từ 10-12 câu về tinh thần yêu nước của nhân dan ta .Giúp mk bài này vs ,mk đang cần gấp

Tính nhanh 24 x 5 + 24 x 3 + 24 x 2

Chỉ rõ phương châm về CÁCH THỨC bị vi phạm trong câu nào dưới đây và giải thích: Gần miền có một mụ nào, Đưa người viễn khách tìm vào vấn danh. Hỏi tên, rằng: "Mã Giám Sinh", Hỏi quê, rằng: "Huyện Lâm Thanh cũng gần".

1. My brother and sister _____ playing tennis at 11am yesterday. are was were 2. _____ you still working at 7pm last night? Were Are Was 3. At 8.30am today I _____ driving to work. was am were 4. We _____ sleeping when the police came. was weren't won't 5. Why _____ he having lunch at 4pm? was does were 6. Was he not _____ his homework? doing do done 7. Snow _____ lightly. Suddenly a reindeer appeared. fell was falling is falling 8. Somebody threw a shoe at him _____ he was speaking. after when while 9. They ________ TV when I arrived. were watching were watched watched 10. I was reading a detective story _____ I heard a noise. during while when