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2 năm trước
giá trị của x biết : (x + 1) + (x + 2) +....+(x + 30) = 1605
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Các câu hỏi liên quan

I. Chia động từ trong ngoặc ở thì Hiện Tại Đơn: 1. I (be) ________ at school at the weekend. 2. She (not study) ________ on Friday. 3. My students (be not) ________ hard working. 4. He (have) ________ a new haircut today. 5. I usually (have) ________ breakfast at 7.00. 6. She (live) ________ in a house? 7. Where your children (be) ________? 8. My sister (work) ________ in a bank. 9. Dog (like) ________ meat. 10. She (live)________ in Florida? 11. It (rain)________ almost every day in Manchester. 12. We (fly)________ to Spain every summer. 13. My mother (fry)________ eggs for breakfast every morning. 14. The bank (close)________ at four o'clock. 15. John (try)________ hard in class, but I (not think) ________ he'll pass. 16. Jo is so smart that she (pass)________ every exam without even trying. 17. My life (be) so boring. I just (watch)________ TV every night. 18. My best friend (write)________ to me every week. 19. You (speak) ________ English? 20. She (not live) ________ in HaiPhong city. II. Đọc bức thư sau và trả lời câu hỏi: Dear Nina, I am Henry. I am nine years old. I have two brothers and one sister. My sister’s name is Vicky. She is eleven years old. And my brothers are called Sam and Tony. Sam is four and Tony is five. My father’s name is Tom and my mother is called Graham. I have a little dog. He is yellow and white. His name is Luke. I am very handsome and I have short black hair and black eyes. I have a computer. My house is next to the school. I can walk to school. Can you tell me about you? How old are you? What do you look like? How about your family? Write soon. Yours, Henry 1. Henry’s sister……………………………………..years old. 2. Henry……………………………. two brother and one sister. 3. Henry’s sister’s name is…………………………………… 4. Henry’s dog ………………………….yellow and…………………… 5. Henry…………………………… hair and…………………….eyes. 6. Henry…………………………school. 7. Henry’s house is………………………the school. 8. Henry………………………..two brothers. 9. Henry’s dog’s name…………………..Luke. 10. Tony……………………five years old. III. Hoàn thành câu 1. He has four (sister)……sisters… 2. These (man)………………..have black eyes. 3. These (child)…………………are intelligent. 4. I love those (mouse)……………………. 5. She (have)…………………two sisters. 6. We (be)…………………friends. 7. I (have)……………………brown eyes. 8. The (pen)……………….are beautiful. 9. It (be)……………………..great. 10. The man (be)……………….in the kitchen. IV. Đọc câu sau và gạch chân dưới từ đúng 1. She like/likes a doll. 2. I love/loves this dress. 3. We have/has a bike. 4. He want/wants a computer. 5. We don’t like/likes tops. 6. He doesn’t like/likes tops. 7. He have/has a book. 8. What do/does he want? 9. Do/does they want a dog? 10. I want/wants a pencil case.

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