I . Chuyển các câu sau sang phủ định: 1. I (collect) stampts. 2. She (go) to school every day. 3. I (like) Maths and she (like) Literature. 4. Joseph (buy) newspapers every Saturday. 5. Rita (do) exercises at 8 p.m every day. 6. Maria sometimes (tidy up) her room. 7. She always (touch) his toys. 8. Lan (catch) a cold every winter. 9. It (rain) a lot in Germany. 10. Tim (study) French quite well. II. Make questions from the cues using “do” or “does”. Look at the example. Example: Where / you / live Where do you live? 1. How / you / go to school ________________________________________________ 2. Where / he / work ________________________________________________ 3. When / class / end ________________________________________________ 4. What / your father / do ________________________________________________ 5. Who / you / see / in the photo? ________________________________________________ 6. How many / cousins / you / have ________________________________________________ 7. Why / you / get up early / on Sundays ________________________________________________ 8. Which / kind of food / you / prefer ________________________________________________ 9. What sport / she / play ________________________________________________

Tìm các số a;b;c;d biết rằng. a:b:c:d=5:6:7:9 và a-b+c-d=63

Giúp em với ạ chứng minh các biểu thức sau > hoặc < 0 B= x^2 + 2y^2 + 2z^2 + 2xy - 2yz - 2xz - 2y + 4z + 5 C= 3x^2 + 2y^2 + 4z^2 +2xy + 4yz + 4xz - 4x - 2y +5 Câu B và C sử dụng hàng đẳng thức này ạ(a + b + c)^2; (a - b + c)^2; (a + b - c)^2; (a - b - c)^2

cho A=x^2/x^3 + 6/6-3x + 1/x+2 . Tìm ĐKXĐ ,rút gọn

hãy viết công thức hóa học của ba hợp chất trong đó có nguyên tố S( Lưu Huỳnh ) và phân tử khối lớn hơn 100.

Giúp em với ạ Ko viết giấy

hơi dài nhưng mn giúp em vs!!! V. Fill in the blank with a suitable word. 1. She was cooking …………… the phone rang. 2. Would you mind …………… I smoked here? 3. Mary used …………… be a good student. 4. Yesterday was …………… hottest day during this month. 5. I sat in the first row so …………… to clearly hear his lecture. 6. she asked me when …………… depart. VI. Choose the correct word(s) to complete the sentences. 1. Would you mind (close / to close/ closing) the window? 2. The ambulance will be there (in / at / for) about 10 munites 3. We collect empty cans and bottles (in order to / so that / for) recycling. 4. John is interested ( in /on / at ) the history of Vietnam.4 5. The boy ( to read / reading / read ) the book is Ba . 6. She hasn’t finished the letter ………… (already / just / yet / never) 7. Lan’s studying hard ……. pass the final exam ( for / in order to so to , as to ) 8. It’s too cold outside. Would you mind……. the window ? ( to close, close, closing, closed ) 9. I am happy ……. all the exam (passing, pass, passed, to pass) 10 The teacher ….. to the principal is my English teacher. (talks, is talking, talking, to talk) 11. The bike ….. in Japan is USA$ 100. (making, made, is making, to make ) 12. We …dinner when the phone rang. (are having, had, have had, were having ) 13. I was having dinner ( when / while / as ) my mother was cleaning the floor. 14. We are (delight/ delighting / delighted ) that you pass your final examation. 15. Would you like ( go/ to go / going ) to the cinema tonight ? 16. Thanks ( for / to / at ) inviting me to the festival. 17. Football is (play/ playing / played ) all over the world. 18. Mai asked Hoa ( whether / to / about ) she came to Hoi An.

cho đoạn mạch gồm 3 điện trở R1 = 4 ôm, R2= 6 ôm và R3 = 2 ôm, trong đó R3 mắc nối tiếp với đoạn mchj gồm R1// R2. Tính R tương đương cần tìm công thức tính đoạn mạch mắc nối tiếp, đoạn mạch mắc // và đoạn mạch mắc hỗn hợp (câu chính)

Đâu là từ thực hiện phép nhân hóa trong câu “Dường như chúng không muốn mọi người phải buồn rầu vì chứng kiến cảnh héo tàn.”? * Chứng kiến. Không muốn. Dường như. Mọi người.

Watch a movie and tell me what you like in this movie, why? Stealing Time | SciFi Time Travel Short Film