58. The weather is e_________ cold,. Please put on your coat.

57. On his a_________ at the airport, he was told his flight was cancelled because of heavy fog.

56. He folded the letter and put it in an e_________.

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.