8. Một trong những hiện tượng đáng buồn hiện nay đang diễn ra trong đời sống hằng ngày đó là việc sai hẹn. Bằng hiểu biết của mình, em hãy chỉ ra những hậu quả của hiện tượng nêu trên.

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PART III. GRAMMAR Questions 21-40: Circle A,B?C, or D as the best choice to complete each sentence. 21. Students should____ to raise questions in class. A. encourage B. to encourage C. be encouraged D. to be encouraged 22. It is compulsory for students in some schools_________ uniforms. A. to wear B. wear C. wearing D. worn 23. This classroom needs.__________. It's very dirty. A. clean B. cleaning C. to clean D. cleaned 24. At school, students usually take part in_______ money for charity. A. raised B. to raise C. raising D. raise 25. May I________ in? A. to come B. coming C. came D. come 26. Let's__________ for a walk. A. go B. to go C. going D. went 27. Do you enjoy__________ cartoons? A. watching B. to watch C. watch D. watched 28. They want___________ by air because it is much faster than other means of transport. A. travel B. travelling C. travelled D. to travel 29. Why don't you consider to visit me? I really look forward to_______ you. A. see B. seen C. seeing D. saw 30. It’s impolite___________ people about their salary. A. asked B. to ask C. ask D. asking 31. Don't_________ in class. A. talking B. to talk C. talked D. talk 32. Who________ you English? A. do teach B. teaches C. teach D. does teach 33. You'd better__________ harder. A, to work B. working C. work D. worked 34. Do children____________ wear school uniforms in your country? A. have to B. must C. have D. must to 35.____________football is my hobby. A. Playing B. Play C. Played D. To play 36. The students in our class are very__________. A. to interest B. interesting C. interest D. interested 36b. The students in our class are very___ in learning English. A. to interest B. interesting C. interest D. interested 37. We should read different kinds of books___ our general knowledge. A. to widen B. widen C. widened D, widening 38. It’s not good to avoid____, the teacher's questions in class. A. answer B. answering C. answered D. to answer 39. Students are always interested in_____ a party. A. to have B. have C. having D. had 40.___________the exams, students have to learn hard. A. To pass B. Passed C. Pass D. Passing làm lẹ giúp mình vs