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Mai276
2 năm trước
1. Cho hệ phương trình Tìm các giá trị nguyên của m để hpt(I) có nghiệm duy nhất (x;y) thõa mãn : x và y là các số nguyên. $\left \{ {{x+y=3} \atop {2x+my=m+5}} \right.$
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1. A. share B. rare C. are D. declare 2. A. cooks B. loves C. joins D. spends 3. A. advises B. raises C. devises D. goes 4. A. teacher B. children C. chore D. school 5. A. hurry B. under C. pressure D. rush 6. A. hands B. parents C. chores D. boys 7. A. brothers B. weekends C. problems D. secrets 8. A. clothes B. cloths C. roofs D. books 9. A. enjoys B. feels C. takes D. gives 10. A. attempts B. shares C. looks D. beliefs 11. A. naked B. looked C. booked D. hooked 12. A. concerned B. raised C. developed D. maintained 13. A. appeared B. agreed C. coughed D. loved 14. A. sacrificed B. trusted C. recorded D. acted 15. A. laughed B. weighed C. helped D. missed 16. A. advised B. devised C. raised D. practised 17. A. shared B. viewed C. confided D. measured 18. A. determined B. expressed C. approved D. married 19. A. smoked B. called C. photographed D. based 20. A. demanded B. lived C. questioned D. supposed 21. A. apply B. university C. identity D. early 22. A. choice B. achieve C. each D. chemistry 23. A. final B. applicant C. high D. decide 24. A. average B. indicate C. application D. grade 25. A. course B. four C. our D. yours

Fill in the blanks with “used to” or “didn’t use to” to complete the sentences. 1.Farmers didn’t use to have plowing machines. They used poultry like buffaloes. (not/ have) 2. Children traditional games like blind man’s bluff because that was the way they entertained in the past. (love) 3. A lot of diseases as fatal because people vaccines back in the days. (be/ consider)- (not have) 4. My grandparents oil lamps to light up the house back in the day. They use electricity now. (use) 5. Kids all the time. They would head outside with their friends in the neighborhood. (not be/ indoors) 6. Before footwear was available, children to school bare-footed. (go) 7. Kids to extra classes after school in my time. (not go) 8. My parents and I in an extended family when I was a child. We moved out last year. (live) Check

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