阅读下列各小题，根据所给出的整句汉语提示，用句末内的英语单词完成句子，并将答案写在答题卡上相应的题号后。

71. Occasions are quite rare _______ a day with my kids. (spend)

 很少有这样的时候，我能陪孩子们度过一天。

72. By the time you arrive here next week, I _____ in Shanghai. (be)

 下周你来这里的时候，我就已经在上海了。

73. _________ I would meet my middle school teacher here. (occur)

  我从来没有想到过在这里遇见我的中学老师。

74. Is there any possibility ____ the new environment? (adapt)

  他们有可能适应新的环境吗？

75. __________ the debt, all of his property was taken away. (unable)

  不能付清债务，他所有的财产都被没收了。

76. If_________, I will visit you next Tuesday. (convenient)

  如果你方便的话，我下星期去拜访你。

77. A study has found that smokers are more likely to quit smoking if they exercise regularly _____ who didn’t exercise. (compare)

   一项研究发现，与不锻炼的烟民相比，经常锻炼的烟民戒烟的可能性更大。

78. At noon we got to the foot of a mountain, _____ a temple. (stand)

中午时分我们来到一座山下，山顶上有座寺庙。

79. He _____ the experiment since he returned from England. (occupy)

  自从他从英国回来之后就一直忙于这个实验。

80. _______ the exam made his parents worried about his academic achievements. (fail)

  他没有通过考试让他父母为他的学业很担心。