51. __________________( witness ) to enter the building when the murder occurred, he is being questioned by the police now.
52. The thief was almost s__________to death when hearing the gunshot.
53. She is the only one of the girls who _______________( 参加 ) the discussion.
54. _____________( abandon) by his parents made him depressed for a long time.
55. He is ___________ ( 思考 ) on how the traffic accident he witnessed on his way to work happened.
56. He has ___________________( 使自己适应) living in remote village.
57. The meeting held the day before yesterday discussed the fair ___________( distribute ) of income and wealth.
58. The company is g_______ by strict environmental regulations.
59. The other day he _________ ( 捐赠 ) a large sum of money to Project Hope to help out the children in need.
60. It was the first time that she ___________ ( operate ) a sewing machine.
61. She __________________( 忙着做) various routines every day.
62. Their voluntary services to the society have been officially ____________ ( 承认).
63. When a member of the football team is injured, a s___________ will play in his place.
64. It is strongly ____________ ( 建议 ) that measures be taken to control the house prices.
65. We have _____________ ( 安顿下来 ) our new home and fit in with our neighbors.