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nholoptruong
2 năm trước
cho tam giác ABC từ điểm D trên cạnh BC kẻ các đường thẳng song song với các cạnh AB và AC chúng cắt các cạnh AB và AC theo thứ tự tại F và E chứng minh AE\AB + AF/AC=1
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Exercise 4:Fill in the blanks with a, an, the or  (zero article) 1. blind are people who can't see anything. 2. deaf are people who can't hear anything. 3. My hometown is on the bank of Hong river. 4. Tung's father bought him bicycle that he had wanted for his birthday. 5. My mother goes to church in morning. 6. I eat banana every day. 7. Harry is a sailor. He spends most of his life at sea. 8. There are billions of stars in space. 9. He tried to park his car but the space wasn't large enough. 10. We had dinner in a restaurant. 11. We had meal in a restaurant. 12. rose is my favourite color. 13. When was computer invented? 14. My daughter plays piano very well. 15. Mary loves flowers. 16. Jill went to hospital to see her friend. 17. Mrs. Lan went to school to meet her son's daughter. 18. Carol went to prison to meet her brother. 19. Sandra works at a big hospital. She's nurse. 20. She works six days week.

Exercise 3: 1. John and Mary went to school yesterday and then studied in library before returning home. 2. On our trip to Spain, we crossed Atlantic Ocean. 3. Rita plays violin and her sister plays guitar. 4. farmers who are working hard on their land almost get nothing for their lifetime. 5. David played basketball and baseball at Boy's club this year. 6. The political science class is taking trip to France in Spring. 7. Last night there was bird singing outside my house. 8. She would like to enjoy Sun rising, so she often gets up early. 9. He is honest person. 10. My father went to sea when he was 14. 11. When do you hope to go to university? 12. He is one-eyed man. 13. There is useful method of learning English. 14. I've got uncle. 15. Your shoes are under bed. 16. There is a strike at hospital. 17. There is onion left in the fridge. 18. There is a splendid (long lay) view of Lake Geneva from his hotel. 19. She is nurse, so her work is to take care of sick. 20. Summer is warmest season but summer of 1971 was unusually cool.

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