80. I have ______ touch with my father for a long time. A. loss B. lost C. loose D. loosen 81. Don’t believe him. He is always ______ friendly. A. superficiality B. superficial C. superficially D. facial 82. I don’t know what I am going to do after leaving school. I am ______ about my decision. A. uncertain B. certainty C. certain D. certainly 83. They have been working very hard in _____ for the upcoming exams. A. prepared B. preparation C. preparatory D. prepares 84. I think their injuries need medical ______ . A. treatment B. treated C. treatable D. untreated 85. This isolated area is ______ only by the helicopter. A. inaccessible B. access C. accessing D. accessible 86. The children should be _____ to realize their full potential. A. discouraged B. encouraged C. couraged D. courage 87. I don’t think I am ______ of doing it. A. capability B. capable C. capabilities D. capacity 88. The film gives us ______ insight into life in Brazil. It’s worth seeing! A. valuable B. unvaluable C. value D. evaluate 89. We were amazed at the _______ of the Great Barrier Reef. A. beautiful B. beautifully C. beautify D. beauty 90. The child was ill due to vitamin ______ . A. deficient B. deficiency C. deficiently D. deficit