完成句子（共10小题，每小题1.5分，共15分）

71. Not until this afternoon ______(我才知道) that the terrible earthquake in Yushu claimed more than 1700 lives. (know)

72. The committee urged that a sound and safe rural financial system _____(建立) to improve the rural economy. (set)

73. ______(给我印象最深的) was that they had never lost heart. (what)

74. With many of his works ______（被出版）, he became more and more famous. (come)

75. He _____（肯定没有参加）the meeting yesterday. I was staying with him all the day. (attend)

76. _____(我一走进) the room, I found the old men lying on the floor, painting. (moment)

77. That was the new way _____ (他用来) to solve this difficult problem.(use)

78. It was for this reason _____（他才到这儿定居的）.(settle)

79. Based on this idea, he developed _____（后来被称为）the internet.(call)

80. ______(没有意识到)having done wrong, my sister refused to make an apology. (aware)