How I regret having wasted so much time! I should           __（努力学习）in the past.（work）  

71. The nearer the college entrance examination draws, __________（越平静）our students. （peaceful） Ks5u

72. It was a big success for the blacks in America   _____________ （他当选）president of the USA （elect） Ks5u

73. The moment when _____________ （他挥舞着）the national flag in space made us feel more proud of our great country. （wave） Ks5u

74. The problem of food safety, which          ____（已讨论）at the meetings yet, is really hard to solve. （discuss） Ks5u

75. Having watching the Beijing Olympics, the majority of foreign guests said they would never forget ______       （他们所看到的）in China. （what） Ks5u

76. The health expert recommended that every one ____________  （不喝牛奶）when the Sanlu milk power incident happened. （drink） Ks5u

77. How I regret having wasted so much time! I should           __（努力学习）in the past.（work） Ks5u

78. So softly and clearly               （她讲话）that even the most naughty boys listened carefully in her class.（speak） Ks5u

79. My mother makes it rule that she won’t go to bed until she ______________ （看见我的作业做完）.（finish） Ks5u

80. It will make a difference if we realize _______________（多么重要）to live life to the fullest. （important） Ks5u

 Ks5u