完成句子（15分）
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。
例：We (起床)before dawn.It was still dark outside.(get)
答案：got up
71.Only if people of all the countries are united （我们才能解决）the existing problems in the world.(solve)
72. （油漆成）red,the building stands out among the rest and looks very attractive.(paint)
73. (不会用)a puter makes it more difficult for him to do his academic research.(use)
74.The news （房价将要下跌）has caused many people to sell their houses at lower prices.(fall)
75.After she pletes the project,she’ll have （没什么要担心的）.(worry)
76.Mr.Johnson insisted that the problem worthy of attention (讨论)at the meeting.(discuss)
77.My mother was so proud of all （我所做的）that she rewarded me with a trip to Beijing.(do)
78.Last night’s TV news said that by then the death of the missing people （未证实）yet.(prove)
79.It’s said that they have swum to the island from the continent,but they （不可能做到）because the ocean in between is too wide.(do)
80. (正如我们强调的那样)many times,“serve the people”is our first policy.(stress)
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