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vuthiminhhang1971
2 năm trước
Trình bày cách tách riêng các chất ra khỏi các hỗn hợp sau: A) lấy nước từ nước tự nhiên B) Lấy vàng ra khỏi hỗn hợp vàng và cát
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V- Each of the following sentences has one mistake. Identify and correct the mistakes. 21. The little boy didn’t know how lacing his shoes. ………………………………………………………………………………………………………. 22. I would rather live on a farm than to live in a city. ………………………………………………………………………………………………………. 23. The workers are building a new bridge which is 150 meters in high. ………………………………………………………………………………………………………. 24. This text is too long for me to read it. ………………………………………………………………………………………………………. 25. The course is good, but more hard than I thought. ………………………………………………………………………………………………………. VI- Give the correct form of the words in brackets. 26. D.E Huge was the_____________of microphone. (invent) 27. People in the countryside are___________________. (friend) 28. If it doesn’t rain soon, there’ll be a great____________of water (short)) 29. Taxi drivers have to have a very good____________on the street names. (know) 30. Environmental_______________is every body’s respomsibility. (protect)

III. Choose the word or phrase (A, B, C or D) that best completes the sentence. 6. The fatter I become, the ____________I run A. quicker B. more slowly C. slower D. more fast 7. ____________go past the traffic lights, and ___________turn left. A. First-than B. First-then C. Then-first D. Finally-then 8. It is ___________to live far from the market and the supermarket. A. easy B. inconvenient C. convenient D. comfortable 9. They have been in love with each other ____________they were young. A. while B. until C. for D. since 10. I have been_________many beautiful places in Viet Nam. A. at B. on C. in D. to 11. ______________are the Olympic Games held? A. How B. How long C. How often D. How much 12. Leave early so that you ____________ miss the bus. A. didn't B. shouldn’t C. won’t D. mustn't 13. What’s the weather ______________ in Ha Noi? A. to like B. likes C. like D. liking 14. A hi-tech robot will help us __________ children while we are away. A. look out B. look at C. look after D. look in 15. Our future houses will use_______________energy, and they are very friendly to the environment. A. sun B. sunny C. solar D. lunar

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