55. We are lucky dogs, for we are in the e_________ of an advanced international company in Shanghai.

54. The government announces that the new law takes e________ from tomorrow.

53. She e_____ her living by working as an assistant of a local small shop before going to college.

52. I felt it was my d______ to tell them the truth.

51. They crowed round the spokesperson, e______ for any valuable news.

50. Modern industrial development has almost d_______ the natural environment in some way, which the humans must rely on.

Part 6: (page 51---60)

49.The police asked her to give a detailed d_____ of what had happened.

48. They want to know what the d_____ of the well is.

47. China is made up of many peoples, so we can enjoy the cultural d_______

46. Her d_____ to marry an 80-year-old man surprised everybody.