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3. Paul tried to solve the problem ______ the noise and interruptions outside. A. because of B. in spite of C. in case of D. according to 4. Mr. Black: “I’d like to try on these shoes, please.” Salesgirl: “______” A. I’d love to. B. By all means, sir. C. Why not? D. That’s right, sir. 5. By the age of 34, my brother ………… his own business. A. started B. has started C. had started D. would start 6. You’d better stop spending money, _______ you will end up in debt A. unless B. otherwise C. if D. in case 7_______________ trying to make him change his mind. A. It’s no point B. It’s no hope C. It’s useless D. It's no use 8. It’s time you __________ home now Go went to go going 9. This is such an important question that we can’t _________________thinking it over. A. point B. use C. help D. stand 10. We agreed _____ together. A. working B. to work C. worked D. to working 11. She refuses_____ to her mother A. listen B. to listening C. to listen D. listening 12. The criminal admits ______ the money. A. to taking B. take C. to take D. taking 13. The students in this class were made _____ very hard. A. learn B. to learn C. learning D. having learnt 14. You ...................... your new hat when I ...................... you yesterday. A. were wearing/ had met B. wore/ had met C. wore/ was meeting D. were wearing/ met 15. I felt quite _______ with my day’s work. A. satisfy B. satisfactory C. satisfied D. satisfaction 16. I remember ___________him said that he would come but he is absent now. A hear B to hear C hearing D heard 17. .................... bag are you carrying? ~ Judy′s. a. Which b. What c. who’s d. Whose 18. The founding of the Radium Institute in 1914 made Marie Curie's __________wish come true. A. human B. humanity C. humanitarian D. humanely 19. He plays football ________ though he is not a football player. A. professionally B. professional C. unprofessionally D. professor 20. Never___________ the exact cause of earthquakes. a. scientists discovered b. did scientists discovered c. does scientists discover d. have scientists discovered 21. “ Do you want me to help you with those suitcases?” “_________” A. Of course, not for me. B. No, I can’t help you now. C. No, those aren’t mine. D. No, I can manage them myself. 22. “Your boss looks like the aggressive type.” “__________” A. Yes, he really wants to get ahead. B. Yes, he’s quite gentle. C. Really? I’ve never seen him lie. D. Right. He ‘s so quiet. 23. I remember -------------- my mother said the grass in the garden needed --------------. A. to hear/cutting B. hear/cut C. heard/to cut D. hearing/ cutting 24. Did you accuse Nam of -------------- a plate? Well, I saw him -------------- it off the table with his elbow. A. break/ knock B. breaking/ knocking C. to break/ to knock D. breaking/ knock 25. We regret -------------- you that we cannot approve your suggestion. A. inform B. to inform C. informing D. informed

rút gọn biểu thức với a≥0; b≥0; a≠b

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I.complete the second sentences so that it means the sames as the first one 7.They will probably travel to japan to experience japanese life style They might_____

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456,16 - x + 12,35 = 46,18 giúp mình nhoaaaa

Một trái banh được ném từ mặt đất thẳng đứng với vận tốc 20m/s. Thời gian từ lúc ném banh đến lúc chạm đất

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Cho 4,6g Na vào 1 lít H2O dung dịch thu được có pH là