21. I am considering ___my job as I’m not getting on well with my boss. (QE04-04-31)

        A. changing        B. to change        C. changed        D. to be changed

        【答案】A consider后面接动名词做宾语，表“考虑做某事”；consider sb./sth. to do表“认为”。因此A为正确答案。本句的意思是：“我正在考虑换工作，因为我和老板关系不太好。”如：We are considering learning a foreign language．我们正在考虑学一门外语。

        22. Charles Babbage is generally considered ______ the first computers. (QE07-04-19)

        A. to invent           B. inventing             C. to have invented    D. having invented

        【答案】C此题考查的是非谓语动词中不定式的用法。Be considered/said/ believed to do 表示：据认为/据说/据相信做……，而后面的动作若已经发生，则用完成时表示，故选to have invented.

        23. Mary regretted ___ to John’s birthday party last Sunday. (QE00-21)

        A. not going      B. not to go    C. not having been going    D. not to be going

        【答案】A。regret后面要跟动名词做宾语，动名词的否定式是在动名词之前直接加not。

        24. I regret _______ you that we are unable to offer you a job.

        A. in forming    B. having informed    C. to inform    D. to informing

        【答案】C。regret to do sth.遗憾做某事。我很遗憾的告诉你我们不能给你这份工作。

        25. In some parts of London, missing a bus means _______ for another hour.

        A. waiting                B. to wait               C. wait                  D. to be waiting

        【答案】A。means doing意味着。在伦敦的某些地方，错过汽车意味着再等一个小时。

        26. I meant _________ you, but I was so busy.

        A. to call on     B. calling on     C. to call at     D. calling at

        【答案】A。mean to do打算做某事。我打算给你打电话的，但是我很忙。

        27. He remembered ____ to the zoo by his father when he was little. (QE92-41)

        A. being taken    B. taking   C. have been taken   D. to have taken

        【答案】A 句意为“他记得小时候被爸爸带到动物园去.”由于他是被带者，因此应当用被动式，选A.关于remember的搭配有remember doing sth, 指“记得做某事”，并且已经做了，或者remember to do sth, 指记得要去做某事，而这件事情尚未完成。

        28. As she is looking forward to ________ from me, please remember ________ this letter on your way to school.

        A. hear, post                            B. hearing, to post

        C. be heard, posting                      D. be hearing, to posting

        【答案】B 因为她正盼望着收到我的来信，记得上学路上把信寄出去。Look forward to doing sth.盼望做某事。Remember to　ｄｏ　ｓｔｈ．记得做某事。

        29. In a few weeks' time we ________ them ________ the forest.

        A. stop, destroying                B. stopped, to destroy

        C. will stop, to destroy             D. will stop, destroying

        【答案】D　几个星期后，我将阻止他们破会森林。ｓｔｏｐ　doing阻止某人做某事。

        30. The bus didn't stop _________ up the passengers, because it was full.

        A. to pick         B. pick         C. picking         D. picked

        【答案】A　stop　ｔｏ　ｄｏ停下来去做某事。汽车没有停下来让乘客上课，因为车满了。