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luongbui254
2 năm trước
Cho bảng ô vuông gồm 10 dòng và 10 cột. Hai bạn Tín và Nhi tô màu các ô, mỗi ô một màu trong 3 màu: xanh, đỏ, tím. Bạn Tín bảo: "Lần nào tô xong hết các ô cũng có 2 dòng mà trên 2 dòng đó có một màu tô số ô dòng này bằng tô số ô dòng kia". Bạn Nhi bảo: "Tớ phát hiện ra bao giờ cũng có 2 cột được tô như thế". Nào, bạn hãy cho biết ai đúng, ai sai?
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Các câu hỏi liên quan

Bài 1: 1 .......... ….(not/belong) to a political party. 2 Hurry! The bus (come). I ................(not/want) to miss it. 3 The River Nile ............. (flow) into the Mediterranean 4 The river .............. (flow) very fast today - much faster than usual. 5 ............... (it/ever/snow) in India? 6 We usually ............ (grow) vegetables in our garden but this year we (not/grow) any 7 A: Can you drive? B: No, but I ............... (learn). My father ..... (teach) me. 8 You can borrow my umbrella. I ..................(not/need) it at the moment. 9 (at a party) I usually (enjoy) parties but I ………......... (notenjoy) this one very much. 10 George says he's 80 years old but I................... (not/believe) him. 11 Ron is in London at the moment. He ……………………..(stay) at the Hilton Hotel. He usually …………………….(stay) at the Hilton Hotel when he's in London 12 My parents………………………. (live) in Bristol. They were born there and have never lived anywhere else. Where ..... .......................... (your parents/live)? 13 She ......................... (stay) with her sister at the moment until she finds somewhere to live. 14. A: What ............................ (your father/do)? B: He's a teacher, but he .....,………….......(not/work) at the moment. Bài 2: 1. Look! Somebody is climbing up that tree over there. ---------------------------- 2 Can you hear those people? What do they talk about? . ---------------------------- 3. Are you believing in God? . ---------------------------- 4. Look! That man tries to open the door of your car. . ---------------------------- 5 The moon goes round the earth ---------------------------------------- 6. I'm thinking it would be a good idea to leave early. ---------------------------------- 8. I'm usually going to work by car --------------------------- Bài 3:Hoàn thành câu sau đúng dạng thì quá khứ đơn: 1. It/ be/ cloudy/ yesterday. …………………………………………………………………… 2. In 1990/ we/ move/ to another city. …………………………………………………………………………………….. 3. When/ you/ get/ the first gift? ………………………………………………………………………….. 4. She/ not/ go/ to the church/ five days ago. ………………………………………………………………………………….. 5. How/ be/ he/ yesterday? …………………………………………………………………………………….. 6. and Mrs. James/ come back home/ and/ have/ lunch/ late/ last night? …………………………………………………………………………………….. 7. They/ happy/ last holiday? …………………………………………………………………………………….. 8. How/ you/ get there? …………………………………………………………………………………….. 9. I/ play/ football/ last/ Sunday. …………………………………………………………………………………….. 10. My/ mother/ make/ two/ cake/ four/ day/ ago. …………………………………………………………………………………….. 11. Tyler/ visit/ his/ grandmother/ last/ month. …………………………………………………………………………………….. 12. Joni/ go/ zoo/ five/ 13. We/ have/ fun/ yesterday. …………………………………………………………………………………….. 14. My/ father/ not/ at the office/ the day/ before yesterday. …………………………………………………………………………………….. 15. I/ go swimming/ yesterday. …………………….………………………………………………………………… 16. Mrs. Nhung/ wash/ the dishes. ……………………………………………………………………………………… 17. my mother/ go shopping/ with/ friends/ in/ park. …………………………………………………………………………………… 18. Lan/ cook/ chicken noodles/ dinner. ……………………………………………………………………………………… 19. Nam/ I/ study/ hard/ last weekend. ………………………………………………………………………………………………….

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