49. This expression is thought of as being out of style today. We seldom use it. （express）
50. It's advisable to learn these good sentences by heart. （advise）
51. What’s important is to keep up our present friendship and trip relationships. （relation）
52. I felt that film was most boring. （bore）
53. There are various clothes to chosen in the store. I am really confused. （vary）
54. I highly appreciate the writing style of Lu Xun. （high）
55. This has greatly increased our international prestige. （internation）
56. That we need more practice and confidence is quite obvious. （confident）
57. I would never have noticed the fault if you had not pointed it out in difficult times. （faulty）
58. Plastic and rubber won’t conduct electricity. （electric）
59. The big department store employed 20 girls to stand at the gate and distribute advertising leaflets to the customers. （advertise）
60. The jury will try a case of robbery with violence. （violent）
61. The air conditioner is so often complained about that I am surprised it hasn’t been improved. （condition）
62. The rapid development of our country stimulated the writers’ creative enthusiasm for writing. （create）
63. The old lady needs comforting after her shock. （comfort）
64. You have left out a possibility that she have got the wrong information. （possible）
65. Plastic bags are useful for holding many kinds of food， by virtue of their clearness， toughness， and low cost. （tough）
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