Xác định a, b Để hệ pt sau có nghiệm x=y=1 a. X+5y=11 2x+by=3

III. Read the following text and decide which answer best fits each numbered blank. There is safety in numbers, and simply getting (1)………….your neighbors can be a big step toward safeguarding your personal safety. There should (2)………..hints to tell is some neighbors are nice, (3)……are not well trifled with, and some would be dangerous to you. Always stay (4)………….with your neighborhood. But that’s not enough. Be nice to your neighbors (5)…………..if you want them to be nice with you. No matter (6)…………..bad the neighborhood, getting your neighbors to band together and watch (7)…………other’s backs can be a good way for everyone to stay safer. Banding together with neighbors can be (8)…………win-win for everyone involved. From keeping tabs (9)…………..one another’s kids to watching one another’s home during the day, simply having the support (10)…………the people around you can be extremely valuable. 1. A. know B. knowing C. knew D. to know 2. A. be B. been C. to be D. being 3. A. some B. any C. all D. one 4. A. inform B. informed C. informing D. to inform 5. A. immediately B. once C. first D. second 6. A. where B. when C. what D. how 7. A. any B. all C. each D. one 8. A. a B. an C. the D. one 9. A. in B. on C. under D. with 10. A. across B. between C. of D. to

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đặt câu với cụm từ sau'' to say thanks for what they have ''

Câu 1: Em hãy tóm tắt ngắn gọn truyện ngắn “ Sống chất mặc bay” của Phạm Duy Tốn. Câu 2: Vì sao nhà văn Phạm Duy Tốn lại đặt nhan đề Sống chết mặc bay cho truyện ngắn của mình? Câu 3: Viết một đoạn văn ngắn khoảng 8-10 câu nêu cảm nghĩ của em về tình cảnh thống khổ của người dân trong truyện “ Sống chết mặc bay” của Phạm Duy Tốn.

1, A = 5x - 3y / 2x+ y , Biet 2 . x = y 2 , B = ( x5 + y 5 - x ^2 . y ^ 2) ( x+y) - 2020 Biet x + y = 0 4 , D = ( x ^ 5 + y ^ 6 - 2 ) . ( 2y- 4 tai x = 50 y , y - 2 = 0

Hãy kể các cuộc khởi nghĩa tiêu biểu của nước ta chống xâm lược phương Bắc?

II. Read the text below and write one word in each blank to complete it. Everyone has the right to enjoy life in their own way as long as they do not cause problems for people living nearby. We have a right to (1)………..peacefully in our home and we all (2)………….a responsibility to be a good neighbor. By being a responsible owner (3)………….good neighbor, you are helping to improve community spirit in (4)…………..neighborhood. It is important to (5)……….and understand the different lifestyles of other people. If you have a problem (6)…………a neighbor, you should try to speak to them about the situation. We all want to get (7)…………..with each other but it is not always easy. The pressure of modern (8)………….mean we all have our off days and we need to make a special effort to get along.