43. ________ many times, he finally understood it.
A. Told B. Telling C. Having told D. Having been told
解析：答案是D。根据句意可知，句子主语he与动词tell之间为被动关系，所以可以排除选项B和C；又因为tell与understand之间明显的先后关系，即先被告诉然后才明白，所以选D不选A。又如：Having been told so beforehand, he was not surprised. 因为之前已经有人告诉他了，所以他并不惊讶。
44. There’s one thing I dislike about him: he will never admit ______ a mistake.
A. having made B. making C. being made D. have been made
解析：答案是A 我就有一点不喜欢他,他从来不承认犯过错误. 犯过错误是指过去犯过的,相对于现在是现在完成式.
45. Before you decide to leave your job, _________ the effect it will have on your family.
A. consider B. considering C. to consider D. considered
解析：答案是A before 引导的是时间状语从句，填空句为主句，而此主句为一祈使句，故动词用原形。
46. If you hear the fire bell, _________ cool and don’t panic.
A. keep B. to keep C. keeping D. kept
解析：答案是A : if引导的是条件状语从句，填空句为主句，而此主句为一祈使句，故动词用原形。
47. Stan spent half a year ______ material for his new book.
A. to collect B. collect C. collecting D. collected
解析：答案是C spend some time doing something 花时间做某事
48. They use computers to keep the traffic ________ smoothly.
A. being run B. run C. to run D. running
解析：答案是D。此题考查keep…doing sth结构，其意为“保持……做某事”“使……不停地做某事”。又如：He kept the fire burning. 他让火燃着。I’m sorry to have kept you waiting. 对不起让你等了。
49. It’s no use ______ me not to worry.
A. you tell B. your telling C. for you to have told D. having told
解析：答案是B it is no use + that从句 或者+doing(动名词形式) b 选项就是一个动名词形式
50.When Peter speaks in public, he always has trouble ______ the right things to say.
A. thinking of B. to think of C. thought of D. think of
解析：答案是A。考查 have trouble doing sth（做某事有困难）的用法，其中的 doing sth 习惯上不能改为不定式或过去分词，但可在 doing sth 前加上介词 in（加上介词 in 后，doing 为动名词）。又如：No, I don’t know his number—I have quite enough trouble remembering my own. 不，我不知道他的号码，我光记自己的号码就够困难的了。
51. The chairman insists that there be a meeting _______ within the shortest possible time.
A. to hold B. to be held C. to have been held D. to be holding
解析：答案是B 不定式作定语修饰meeting，因为meeting和hold之间是被动关系，所以用不定式的被动形式。另外，因为是还没有发生的事情，所以不能用to have been held 这种不定式的完成形式。
52. There is a great deal of evidence ________ that music activities engage different parts of the brain.
A. indicate B. indicating C. to indicate D. to be indicating
解析：答案是B。从语法上看，“there be+名词”后面既可接不定式，也可接现在分词，其区别是：用不定式表示将要发生的情况，和现在分词表示正在进行的情况或通常性情况。根据句意，显然应用现在分词。句意为：有大量证据表明音乐活动与大脑的不同部位有密切关系。
53. When the famous pianist was a child, he was accustomed ______ for several hours a day.
A. to practicing B. to practice
C. to be practicing D. to have practiced.
解析：答案是A custom to后面要跟一个名词或动名词,所以选A
54.The repairs cost a lot, but it’s money well _________.
A. to spend B. spent C. being spent D. spending
解析：答案选B。凡是含有被动意义时，原则上要用过去分词。但是，如果所涉及的动作尚未发生，则用不定式的被动式；如果所涉及的动作正在进行，则用现在分词的被动式。由于money与spend之间为被动关系，故用过去分词。
55. Five people won the “China’s Green Figure” award, a title _________ to ordinary people for their contributions to environmental protection.
A. being given B. is given C. given D. was given
解析：答案选C。凡是含有被动意义时，原则上要用过去分词。但是，如果所涉及的动作尚未发生，则用不定式的被动式；如果所涉及的动作正在进行，则用现在分词的被动式。由于title与give之间为被动关系，故用过去分词。
56. In China hundreds of different dialects are spoken; people of some villages ______ themselves understood by the inhabitants of the next town.
A. making trouble have B. have making trouble
C. have trouble making D. trouble making have
解析：答案是C have difficulty in doing sth / have trouble in doing sth 意思一样，都是做某事有困难。。。后面的in 可以省去
A. Told B. Telling C. Having told D. Having been told
解析：答案是D。根据句意可知，句子主语he与动词tell之间为被动关系，所以可以排除选项B和C；又因为tell与understand之间明显的先后关系，即先被告诉然后才明白，所以选D不选A。又如：Having been told so beforehand, he was not surprised. 因为之前已经有人告诉他了，所以他并不惊讶。
44. There’s one thing I dislike about him: he will never admit ______ a mistake.
A. having made B. making C. being made D. have been made
解析：答案是A 我就有一点不喜欢他,他从来不承认犯过错误. 犯过错误是指过去犯过的,相对于现在是现在完成式.
45. Before you decide to leave your job, _________ the effect it will have on your family.
A. consider B. considering C. to consider D. considered
解析：答案是A before 引导的是时间状语从句，填空句为主句，而此主句为一祈使句，故动词用原形。
46. If you hear the fire bell, _________ cool and don’t panic.
A. keep B. to keep C. keeping D. kept
解析：答案是A : if引导的是条件状语从句，填空句为主句，而此主句为一祈使句，故动词用原形。
47. Stan spent half a year ______ material for his new book.
A. to collect B. collect C. collecting D. collected
解析：答案是C spend some time doing something 花时间做某事
48. They use computers to keep the traffic ________ smoothly.
A. being run B. run C. to run D. running
解析：答案是D。此题考查keep…doing sth结构，其意为“保持……做某事”“使……不停地做某事”。又如：He kept the fire burning. 他让火燃着。I’m sorry to have kept you waiting. 对不起让你等了。
49. It’s no use ______ me not to worry.
A. you tell B. your telling C. for you to have told D. having told
解析：答案是B it is no use + that从句 或者+doing(动名词形式) b 选项就是一个动名词形式
50.When Peter speaks in public, he always has trouble ______ the right things to say.
A. thinking of B. to think of C. thought of D. think of
解析：答案是A。考查 have trouble doing sth（做某事有困难）的用法，其中的 doing sth 习惯上不能改为不定式或过去分词，但可在 doing sth 前加上介词 in（加上介词 in 后，doing 为动名词）。又如：No, I don’t know his number—I have quite enough trouble remembering my own. 不，我不知道他的号码，我光记自己的号码就够困难的了。
51. The chairman insists that there be a meeting _______ within the shortest possible time.
A. to hold B. to be held C. to have been held D. to be holding
解析：答案是B 不定式作定语修饰meeting，因为meeting和hold之间是被动关系，所以用不定式的被动形式。另外，因为是还没有发生的事情，所以不能用to have been held 这种不定式的完成形式。
52. There is a great deal of evidence ________ that music activities engage different parts of the brain.
A. indicate B. indicating C. to indicate D. to be indicating
解析：答案是B。从语法上看，“there be+名词”后面既可接不定式，也可接现在分词，其区别是：用不定式表示将要发生的情况，和现在分词表示正在进行的情况或通常性情况。根据句意，显然应用现在分词。句意为：有大量证据表明音乐活动与大脑的不同部位有密切关系。
53. When the famous pianist was a child, he was accustomed ______ for several hours a day.
A. to practicing B. to practice
C. to be practicing D. to have practiced.
解析：答案是A custom to后面要跟一个名词或动名词,所以选A
54.The repairs cost a lot, but it’s money well _________.
A. to spend B. spent C. being spent D. spending
解析：答案选B。凡是含有被动意义时，原则上要用过去分词。但是，如果所涉及的动作尚未发生，则用不定式的被动式；如果所涉及的动作正在进行，则用现在分词的被动式。由于money与spend之间为被动关系，故用过去分词。
55. Five people won the “China’s Green Figure” award, a title _________ to ordinary people for their contributions to environmental protection.
A. being given B. is given C. given D. was given
解析：答案选C。凡是含有被动意义时，原则上要用过去分词。但是，如果所涉及的动作尚未发生，则用不定式的被动式；如果所涉及的动作正在进行，则用现在分词的被动式。由于title与give之间为被动关系，故用过去分词。
56. In China hundreds of different dialects are spoken; people of some villages ______ themselves understood by the inhabitants of the next town.
A. making trouble have B. have making trouble
C. have trouble making D. trouble making have
解析：答案是C have difficulty in doing sth / have trouble in doing sth 意思一样，都是做某事有困难。。。后面的in 可以省去
