a) Chứng Minh: (2n + 3 )^2 - (2n - 3 )^2 luôn chia hết cho 24 b) Chứng Minh: (n + 5 )^2 - n^2 luôn chia hết cho 5

một xe ô tô đi từ a đến b hết 3h12'p. Nếu vận tốc tăng thêm 10km/h thì đến sớm hơn 32'p. Tính quãng đường ab và vận tốc xe ban đầu giải theo cách lớp 8 nha mn !

EX 17. CHOOSE THE BEST OPTION: 1. Ann says that she isn’t ..........................in the life in the city. (interested , used, like, favorite) 2. Your sister looks..................today. (happy, happily, to be happy, at happy) 3. There are three ...................over there . (man, men, mans, mens) 4. Janet and I live quite far............ each other. (from, at , as , 0) 5. I’m a bit shy. I don’t ............... friends easily. (take, do , win , make ) 6. Which is your house? - The one............. (on right , on the right , at the right, on right hand) 7. Some scientists spend most of their lives.............. at rocks. (looking , look , to look , looked ) 8. People in Asia often drink ............... ( some tea, tea, the tea , many tea ) 9. The public library in the city has ....... of books (thousand, thousands, a thousand, two thousands) 10. Uncle Nghia sends poscards......... Ba from the cities he visits (at, to, for, from ) 11. Ba has a lot of history books. He will ............Liz some. (lend, borrow, give, get ) 12. He talked a lot.......................you (about, of, on, for) EX 18. Circle the best answer A, B, C or D: 1. My father wants to buy some stamps. Let’s go to the . A. supermarket B. factory C. Bookshop D. post office 2. Mrs. Linh wants some . Let’s go to the supermarket. A. clothes B. bread C. books D. All are correct 2. Peters wants to see some animals. Let’s go to the . A. bookshop B. library C. circus D. post office 4. Excuse me. - ? A . Thanks B. No C. Yes D. What 5. My mother lunch at 12.30. A. have B. has C. does D. plays 6. What time your father have dinner? - At 7.00 p.m. A. do B. does C. don’t D. doesn’t 7. Miss Linda works in a factory. He is a . A. worker B. teacher C. doctor D. student 8. She teaches English at Thang Long Primary School. She is a . A. worker B. student C. doctor D. teacher 9. They work in a hospital. They are . A. workers B. engineers C. students D. doctors 10. Do you beef? - Yes, we do. A. likes B. like C. to like D. not like EX 19. Circle the odd one out: 1. A. fish B. beef C. skirt D. chicken 2. A. coffee B. shoes C. cake D. water 3. A. want B. like C. Buy D. circus 4. A. pencil B. fruit C. pen D. eraser 5. A. apple B. postcard C. banana D. lemon 6. A. flower B. dress C. shorts D. shoes 7. A. buy B. send C. clothes D. see 8. A. bookshop B. T-shirt C. supermarket D. fashion shop

Viết calli past 3 " Yêu Dâu to bự nhiều nhiều <3 " ko app, ko ô li, ko kẻ ngang, ko vi phạm luật., 1 pic kí, 1 pic ko P/S: Ôi điểm của tui :<<

Chỉ mik bài 12,13 vs ạ,mik cảm ơn

EX 15. Fill the gaps with correct words: I live in a (1).......................near the sea. It’s an old house, about (2)....................... years old, and it’s very small. There are two bedrooms upstairs but no (3)........................ The bathroom is downstairs (4)....................... to the kitchen and there’s a living room where there’s a lovely (5)....................... fireplace. There’s a garden in (6)....................of the house. The garden goes down to the beach and in spring (7)...................summer there are flowers everywhere. I (8)..................my house for many reasons: the (9).......................garden, the flowers in summer, the fire in winter. But the best thing is the view from my (10).......................bedroom window. EX 16. REARRANGE THESE WORDS: 1. like/ dinner/ house/ would/ have/ you/ to/ my/ at/tonight? …………………………………….. 2. watching/ prefers/ to/ books./ TV/ Hieu/ reading/ ……………………………………………… 3. kinds/ does/ like?/ what/ food/ Ha/ of/ …………………………………………………………. 4. is/ evening/ cartoon/ a/ there/ this/ ……………………………………………………………… 5. beef/ and/ Dung/ like/ does/ I/ so/. …………………………………………………………………. 6. work/ will/ do/ all/the/ machines/ for/ us/ ………………………………………………………….. 7. it/ hours/ about/ 2/ Thanh Hoa/ to/ takes/ by/ get/ to/ bus/. ->Thanh Hoa …………………………………………………………………………………………..

Exercise4- Viết các từ bằng với “though” và nói cách sử dụng của chúng. giúp em nhanh vs ạ em tặng 5 sao

Cửa hàng của mẹ Lan đang có chương trình khuyến mãi với nước tăng lực X (giá niêm yết là 9000đ/lon). Từng bậc giảm giá như sau: (trong hình) a) Bạn Minh mua 3 lon nước tăng lực trên thì phải trả bao nhiêu tiền? b) Qua 2 tuần sau, Minh lại đến cửa hàng để mua các lon nước ấy với số tiền phải trả là 422500 đồng để tổ chức sinh nhật cho em mình. Hỏi lúc này bạn đã mua bao nhiêu lon nước tăng lực X?

mk lại thay nick ròi vẽ hình tròn vừa tròn vừa chụp cái app nèo đẹp tí nah

EX 13. Read the passage and answer the questions below: My name is Kim Anh. Here is a photo of my school. It is a big school. It is in Hue. It is on Nguyen Hue Street. In my school, there is a big yard and there are a lot of trees around it. My school has three floors and forty classrooms with 1,500 students. My classroom is on the second floor. I’m in grade 6, class 6A. Our class starts at 7:15 and finishes at 11:30. At school we learn many things, but I like Literature and English best. I also like Music, Sports and Art. We often have recess at 9:05. We usually drink, eat and talk at recess. We sometimes play badminton. We often make much noise at recess. After school, we often go home and have lunch at 12:30. 1/ Is Kim Anh’s school big? 2/ What are there around her school ? …………………………….……………………………… 3/ Is she in grade six or seven? 4/ How many students are there in her school? 5/ Which subjects does she like best? 6/ What do Kim Anh and her friends do at recess? EX 14. Make questions for the underlined world: 1. Phuong’s phone number is 04 33 973 512. 2. It’s 1 kilometer from my house to school. 3. Lan Anh will be eleven on her next birthday. 4. Ha goes to school six times a week 5. They are in their classroom.