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Cho mấy bạn câu dễ lấy điểm nè !!!!!!!!!!!! Câu 1: Thế nào là luân canh, xen canh, tăng vụ? Lấy VD? Câu 2: Tác dụng của luân canh, xen canh, tăng vụ?
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:. Rewrite these sentences ( Baì tập nâng cao ) 1. There did not use to be many cars on the road before. Now there are………………………………………………………………………………… 2. My brother was a professor at Ha Noi University some years ago, but now he has a job as an enginneer at a big company. My brother used……………………………………………………………………………… 3. Linh walked to school some years ago but now she cycles there. Linh used…………………………………………………………………………………….. 4. My father swam in the pool near his house when he was a boy. My father used……………………………………………………………………………… 5. There are many green trees in front of my house but now it is a big car park. There used…………………………………………………………………………………… 6. I usually stayed up late to watch football matches last year, but now I don’t. I used………………………………………………………………………………………… 7. Linda doesn’t live with her parent any more. Linda………………………………………………………………………………………… 8. My hair is now much longer than that in the past. In the past my hair…………………………………………………………………………… 9. He is not a poor man any more, but he becomes a rich businessman. He used………………………………………………………………………………………. 10. Did you often go to the beach when you lived in Nha Trang? Did you use…………………………………………………………………………………..?

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