51. Oil prices have __________（接近）their highest level for almost ten years.
52. Many workers were __________（失业的）because of the economic problem.
53. The way my brother talked to my mother __________（烦扰）me.
54. The n__________ temperature of a human being is about 37℃.
55. We are so poor that we __________（极少地）eat in the restaurant.
56. We must take __________（辛苦）to face the difficulties in our life.
57. The man felt __________（尴尬的）because he met his ex-wife in the supermarket.
58. The i__________ of the medicine are written in English, German and Japanese.
59. Be sure to be __________（热心的）about your work.
60. Iron r__________ with water and air to produce rust.
61. We dressed up for the party but she was still in her __________（普通的）clothes.
62. The population’s becoming large has threatened the b__________ of nature.
63. It is __________（违法的）to drive a car that is not taxed and insured.
64. This summer millions of __________（参与者）join in the exciting game---the 2014 World Cup.
65. The best t__________ for a cold is to rest and drink more water.
66. The people involved in the wedding __________（仪式）all enjoyed themselves.
67. The children’s shouts __________（惊吓）off the birds just now.
68. There must be something we can take back as __________（纪念品）.
69. Having no children of their own, they decided to a__________ an orphan.
70. They wore t_________ Chinese clothes to attend the party.
71. To their great sorrow, the new school was __________（毁坏）in the flood.
72. If you want to catch that train we’d better set off for the station __________（立即）.
73. An e__________ person is very active and seldom feels tired.
74. The two girls are __________（类似地）dressed and I can hardly tell them apart.
75. During the meeting, his speech was __________（录音）on a tape.
76. It’s difficult to understand the passage with so many __________（复杂）sentences.
77. My little brother has a t__________ for music.
78. The jar __________（装有）petrol is leaking.
79. The __________（来源）of the information is not reliable.
80. The desert is a__________ only by helicopter.