42. A. free　　 　　　　　　 B. safe　 　　　　　　 C. absent　 　　　　　　　　 D. different

41. A. interesting　 　　　　　　　 B. anxious　 　　　　　 C. popular 　　　　　　　　　 D. eager

39. It has been announced that __________(任何被抓住舞弊的人)in the exam will be graded zero. (catch; cheat)

38. The road-repairman ___________(碰巧目击到了)the road accident when he was working. (happen)

37. It is widely accepted that children __________(习惯了给予的)will become spoiled. (used; give)

36. The number of people infected with AIDS could reach 10 million by 2020 ___________(除非采取有效措施)to prevent the spread of the disease. (unless; measures)

35. Many coal mine accidents __________(本来可以避免的)if we had followed the strict safety rules. (avoid)

34. Students should be brought up to know that love, happiness and success are __________(金钱所买不到的). (buy)

33. The company has named a famous actor as their spokesman in order to __________(提升其产品知名度). (make; better)