cho các oxit sau:na2o, bao, p2o5, so3, cao, fe2o3, sio2, cuo, co2 hãy cho biết những oxit nào tác dụng được với 1.h2o 2.h2so4 loãng 3. naoh trả lời được 5 sao+ câu trả lời hay nhứttttttttttttt

Bài 11. Complete the sentences using the past simple form of the verbs. 1. I _____ at home all weekend. (stay) 2. Angela ______ to the cinema last night. (go) 3. My friends ______ a great time in Nha Trang last year. (have) 4. My vacation in Hue ______ wonderful. (be) 5. Last summer I _____ Ngoc Son Temple in Ha Noi. (visit) 6. My parents ____ very tired after the trip. (be) 7. I _______ a lot of gifts for my little sister. (buy) 8. Lan and Mai _______ sharks, dolphins and turtles at Tri Nguyen aquarium. (see) 9. Trung _____ chicken and rice for dinner. (eat) 10. They ____ about their holiday in Hoi An. (talk) 11. Phuong _____ to Hanoi yesterday. (return) 12. We _____ the food was delicious. (think) 13. Yesterday, I (go)______ to the restaurant with a client. 14. We (drive) ______ around the parking lot for 20 mins to find a parking space. 15. When we (arrive) ______ at the restaurant, the place (be) ______ full. 16. The waitress (ask) ______ us if we (have) reservations. 17. I (say), "No, my secretary forgets to make them." 18. The waitress (tell)______ us to come back in two hours. 19. My client and I slowly (walk) ______ back to the car. 20. Then we (see) ______ a small grocery store. 21. We (stop) in the grocery store and (buy) ______ some sandwic

Cho P = x-1/√x với x >0 và x≠1 .Tìm x để P không âm

7. Cho góc xOy là góc vuông. Trên Ox, Oy lấy A, B sao cho OA = OB = 4 cm. Trên tia đối của Ox lấy điểm C sao cho OC = 4cm; trên tia đối của Oy lấy điểm D sao cho OD = 4 cm. Nối 4 điểm A, B, C, D với nhau. a) Tính AC, BD. b) Chứng tỏ O là trung điểm của AC và BD. c) Kể tên tất cả các đoạn thẳng trên hình vẽ.

Dựa theo cấu trúc dưới đây, viết câu cảm thán. What + (a/an) + Adj N(s)! How + Adj/Adv + S + V! Giúp em bài này với ạ. Em cảm ơn mn.

Bài 11. Complete the sentences using the past simple form of the verbs. 1. I _____ at home all weekend. (stay) 2. Angela ______ to the cinema last night. (go) 3. My friends ______ a great time in Nha Trang last year. (have) 4. My vacation in Hue ______ wonderful. (be) 5. Last summer I _____ Ngoc Son Temple in Ha Noi. (visit) 6. My parents ____ very tired after the trip. (be) 7. I _______ a lot of gifts for my little sister. (buy) 8. Lan and Mai _______ sharks, dolphins and turtles at Tri Nguyen aquarium. (see) 9. Trung _____ chicken and rice for dinner. (eat) 10. They ____ about their holiday in Hoi An. (talk) 11. Phuong _____ to Hanoi yesterday. (return) 12. We _____ the food was delicious. (think) 13. Yesterday, I (go)______ to the restaurant with a client. 14. We (drive) ______ around the parking lot for 20 mins to find a parking space. 15. When we (arrive) ______ at the restaurant, the place (be) ______ full. 16. The waitress (ask) ______ us if we (have) reservations. 17. I (say), "No, my secretary forgets to make them." 18. The waitress (tell)______ us to come back in two hours. 19. My client and I slowly (walk) ______ back to the car. 20. Then we (see) ______ a small grocery store. 21. We (stop) in the grocery store and (buy) ______ some sandwic

Unscramble the sentences. Use negative contractions when needed.

Mọi người giải giúp em phương trình này vs ạ.

She________for hours. That’s why her eyes are red now. A. cried B. has been crying C. was crying D. has cried

EX3 Viết lại câu theo gợi ý sao cho sát nghĩa nhất 1. Why don’t you ask her yourself? >> I suggest …………………… 2. “Why don’t you put a better lock on the door, Barry?” said John >> John suggested …………………. 3. “Why don’t you put your luggage under the seat?” he asked. >> He suggested ………………… 4. Why don’t you meet Mr. Lewis to discuss the pay offer? >> I suggest ……………………… 5. “You’d better go to the doctor if you’ve got a pain in your back, Anna.” Henry said. >> Henry suggested ………………………… 6. The doctor advised me to rest. >> The doctor suggested ………………. 7. “Let’s go for a walk in the park,” said Andrew. >> Andrew suggested …………………… 8. “I’d take a taxi if I were you,” said Peter. >> Peter suggested ……………………… EX5 Tìm và sửa lỗi sai trong các câu sau 1. The doctor suggested that Jack stops drinking coffee. 2. The teacher recommended that we can study this list of vocabulary for the exam. 3. I suggest that you memorizing good action instead of wrong way! 4. My mother suggest that we go out for hang out after the dinner. 5. My father suggested should I get a part time job after I graduated. 6. She suggests he goes to France instead of Italy this summer. 7. I suggested her to be Queen Elsa from Frozen for Halloween! 8. I suggested that he that ask someone else for help. 9. He suggested go for a walk together. 10. He suggested to travelling together for safety, since the area was so dangerous. 11. I suggested that going to the supermarket 12. I suggest can you should walk more for good health 13. The teacher suggested Lan should does more exercise. 14. He suggest that I should go to Korea. 15. Anna suggests that we went out for lunch after the movie.