61. Nowadays people are more （concern）about the environment where they live.
62. Two years ago she bought an expensive mountain bike and then she （persuade）me to buy one.
63. Everyone has his own attitude to helping others and I would be （grade）if you could give me a hand.
64. Tom has studied English in London for many years and now he can speak English f .
65. The film about a couple's life is b on a true story.
66. Nowadays, in that country many people own more than two （公寓）.
67. Another time five months ago, I happened to be upstairs at （黄昏）when the window was open.
68. She is very （可依赖的）and I knew I didn't need to encourage her.
69. She gave me a （determine）look--the kind that said she would not change her mind.
70. Because we are flying an altitude of 10,000meters now, some of us feel frightened.