阅读下列各小题，根据括号内的汉语提示，用句
末括号内的英语单词完成句子，并将答案写在答题卡上的相应题号后。
71. The situation of unemployment has not been so serious ___________________________ (所期待的). (expect)
72. Tom has been playing basketball on the playground, ___________________________ (脸上全是汗水). (cover)
73. ___________________________ (余下要做的) is an accurate description of the long process of the experiment. (leave)
74. It’s widely accepted that never in history ___________________________ (有过) a more successful opening ceremony than that of the Beijing Olympics. (there)
75. During my last trip my cellphone was left in a hotel accidentally, ______________________ (再也找
不到) . (find)
76. He told us that he was very happy ___________________________ (他现在的处境) . (be)
77. Qian Xuesen went to California from 1935 to 1955, ___________________________ (在那时期) he concentrated on the research into jet planes. (period)
78. I have no idea whether the machine can be used again but it __________________________ (在维修) in the morning. (repair)
79. Did you know ___________________________ (到底怎么) the nuclear explosion occurred in Japan? (it)
80. The air hostess required that___________________________ (我们坐着) until the plane had come to a complete stop. (remain)
