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49. Why don’t you put the meat in the fridge? It will _____ fresh for several days.

A. be stayed　　　 B. stay　　 　　　 C. be staying　　　 　　 D. have stayed

48. More patients_______ in hospital this year than last year.

A. treated　 　 B. have treated　 　　　 C. had been treated　　 　　　　 　D. have been treated

47. Because the shop _______, all the T-shirts are sold at half price.

A. has closed down　 　　 B. closed down　 　　　　 C. is closing down　 　　 D. had closed down

46. The discussion ______ alive when an interesting topic was brought in.

A. was coming　　 　 B. had come　　　 　　　 C. has come　　 D. came

45. She has set a new record, that is, the sales of her latest book _____50 million.

A. have reached　　 　　　　 B. has reached　　 　　 C. are reaching　　 　　 D. had reached

44. ----You were out when I dropped in at your house.

----Oh, I_______ for a friend from England at the airport.

A. was waiting　 　 B. had waited　　 　　 C. am waiting　　 　　　 　D. have waited

43. All the employees except the manager ______ to work online at home.

A. encourages　　 　 B. encourage　　 　　　　 C. is encouraged　　 　 D. are encouraged

42. She _____ her hairstyle in her hometown before she came to Chongqing for a better job.

A. would change　 B. has changed　 　　　　 C. changed　　 　 D. was changing

41. The crazy fans ________ patiently for two hours, and they would wait till the movie star arrived.

A. were waiting　 　 B. had been waiting　　 　　　 C. had waited　 　　　　 D. would wait

40. The first use of atomic weapons was in 1945, and their power ___ increased enormously ever since.

　 A. is　　　　 　　　　 　B. was　　　　 　　 C. has been　　　　 　 D. had been