67. He sent me an e-mail, ___、_______ to get further information.
A. hoped B. hoping
C. to hope D. hope
答：B．hoping为现在分词傲伴随状语。从前边的逗号可排除C项。
68. _______in 1636, Harvard is one of the most famous universities in the United States.
A. Being founded B. It was founded
C. Founded D. Founding
答：C．分词做状浯，分词的逻辑主语应和句子的主语一致．Harvard是在1636年创建的，应是被动的，应用过去分词．A项表示正在进行的被动的动作．
69. ________ late in the morning, Bob turned off the alarm,
A. To sleep B. Sleeping
C. Sleep D. Having slept
答：A。不定式做目的状语，该句意为 Bob turned off the alarm to sleep late in the morning, sleep late 睡懒觉。
70. One learns a language by making mistakes and ______ them.
A. correct B. correcting
C. corrects D. to correct
答：D． eorrecting 与making并列
71 As we joined the big crowd I got ______ from my friends.
A. separated B. spared
C. lost D. missed
答：A。get+pp．是一种被动式，从from一词可排除C项．
72. ________ such heavy pollution already, it may now be too late to clean up the river.
A. Having suffered B. Suffering
C. To suffer D. Suffered
答：A。题中already是重要的信息，由此判断应使用完成式。
73. Prices of daily goods _______ through a computer can be lower than store prices.
A. are bought B. bought
C. been bought D. buying
答：B。从题干的句子结构可知canbe为谓语，故判断出是过去分词做定语。
74. —Why are you looking so sad, Tom?
—The football game_____ for tomorrow will not be held.
A. planned B. planning
C. to plan D. to be planned
答：A。“已计划好的要在明天举行的球赛不能如期举行了”。从句童可判断出是过去分词做定语。D项表示将来。