42. She took her son, ran out of the house, _____ him in the car and drove quickly to the nearest doctor’s office.

A. put                                                             B. to put

C. putting                                                        D. having put

【解析】A。但容易误选B或C，误认为这考查非谓语动词的用法。

句中的took, ran, put, drove 为四并列的谓语动词，其时态应一致。

41. “Do you have anything more ______, sir?” “No. You can have a rest or do something else.”

A. typing                                                         B. to be typed

C. typed                                                          D. to type

【解析】B。但容易误选D，根据 have sth to do 这一常用结构推出。

40. Both of my parents insisted _______ a computer for me, but I don’t think it is necessary.

A. to buy                                                         B. buying

C. on buying                                                    D. in buying

【解析】C。但容易误选B，误认为insist后不能接不定式，但可以接动名词。

但必须要借助介词 on或upon，即用于 insist on [upon] (doing) sth；但它有时的确也可用作及物动词，不过其宾语通常只能是 that 从句，而不能是普通的名词、代词或动名词。

39. Not only should you get used ______ under difficult conditions but you also you pay more attention ______ your work well.

A. to work, to do                         B. to working, to doing

C. to work, to doing                       D. to working, to do

【解析】B。但容易误选A，认为两个空白处均应填不定式。因为 get used to与pay attention to 这两个结构中的to均为介词，不是不定式符号，故后接动词时要用动名词，不能动词原形。

38. Once your business becomes international, _____ constantly will be part of your life.

A. you fly                                                       B. your flight

C. flight                                                          D. flying

【解析】D。由于空格后出现了constantly这一副词，这就说明不能选B或C，因为B、C均为名词，不能受副词 constantly 的修饰。A和D均是可能的，因为其中有动词 fly。但若选A，you fly 是一个主谓结构，与其后的谓语 will be 相冲突，所以只能选D，即动名词flying在此用作主语。

37. Remind me _______ the medicine tomorrow.

A. of taking                                                     B. taking

C. to take                                                        D. take

【解析】C。但容易误选A。受 remind sb of (doing) sth 这一常用结构的影响。

36. The murderer was brought in, with his hands ______ behind his back.

A. to be tied                                                    B. being tied

C. tied                                                             D. having tied

【解析】C。但容易误选B。从意义上看，hands 与 tie 的关系应属被动关系，故排除D。

 35. The purpose of new technologies is to make life easier, ______ it more difficult.

A. not make                                                     B. not to make

C. not making                                                  D. do not make

【解析】B但容易误选C，受题干中的逗号的影响，认为是现在分词表结果的用法。句中的逗号相当于连词 and 或 but，not to make it more difficult 是对逗号前的不定式 to make life easier 的补充说明。此句的意思是“新技术的目的是为了使生活变得更容易，而不是使生活变得更困难”。两个不定式同时用以说明句子主语 purpose 的内容。

33. All her time _______ experiments, she has no time for films.

A. devoted to do    B. devoted to doing    C. devoting to doing   D. is devoted to doing

【解析】B。devote 意为“致力于，献身于”，主要用 devote…to…或be devoted to，其中的to 是介词，不是不定式符号，故后接动词时要用动名词，不用不定式。

34 All the preparations for the project ______, and we’re ready to start.

A. completed                                                   B. have been completed

C. had been completed                                      D. been completed

【解析】B，因为句中使用了并列连词and：

32. He knows nothing about it, so he can’t help _______ any of your work.

A. doing           B. to do              C. being doing      D. to be done

【解析】A但容易误选B，根据 can’t help doing sth 这一结构推出。

比较以下结构：

can’t help to do sth = 不能帮助做某事

can’t help doing sth = 禁不住做某事，情不自禁地做某事