53.Miss Li speaks English with excellent p______.　 ?　　　　　

52. My train was 20 minutes late in the morning and there was a_______

(相似的)delay in the evening. ? ???? 　 　　　

51. We have to get the job done s_____. We don’t want others to know about it.

47. G_____ speaking , parents care more about their children's health

than about their own.　　　　　　　　　　 48.I can't tell one from the other because they are only s________different.　 　　　　　　　　　　　　　　　　　 49.There has been a 50% growth in the m____ for personal computers.　　　　　　　　　　　　　　　　　　 50.Thank you for o______ to help , but I can manage it myself.　　　

45．Two hundred s_____ bicycles were returned to their owners last month. 46.When I got home after the holiday there were a lot of m______ in my phone.

41．That flying school graduates a hundred p______ every year.　　 42．Father C　　　　 　　 will give the children some presents during the night. 43．Edison was a great American i　　　　 　　 44．I must a_______for not having been able to write to you sooner.

40. She looks f________ to me, but I don’t remember her names.　　　

39. They lived in London until quite r________　　　　　　　　　

38. What is the best-known chain of fast-food r________ in the world?

37. Fifty years ago, Chairman Mao a________ the founding of the People's Republic 　of China.