33.

Mr Reed made up his mind to devote all he had to　 ________ some schools for poor children.

A. set up　　　 　B. setting up　　　 C. have set up　　 D.having set up

[解析]　 to devote sth. to后接动名词作宾语。即：devote sth. doing sth.。有的考生把all he had to当成了一个短语，误填了set up。实际上，all he had 作devoted的宾语，是一个宾语从句。译文：利德先生决定用自己所有的一切为贫困儿童建造几所学校。答案为B。

32.

Sandy could do nothing but　 ________　 to his teacher that he was wrong.

A. admit　　　　 B. admitted　　　　 C. admitting　　 D. to admit

[解析]　 该句中的but是介词，后接动词不定式。当谓语动词是do，does或did时，后接不带to的不定式；是其他动词时，后接带to的不定式。该句的谓语是could do nothing，要填动词原形admit。译文：山德不得不向老师承认自己错了。答案为A。　

31.

One learns a language by making mistakes and _______ them.

A. correct　　　 B. correcting　　 C. corrects　　　 D. to correct

[解析]　 介词by后接动名词，用and连接的两个表示并列成分的非谓语动词形式要一致。答案为B。

30.

　_______ late in the morning, Bob turned off the alarm.

A. To sleep　　　　 B. Sleeping　　　 C. Sleep　　　　 D. Having slept

[解析]　 用不定式表示具体的目的，sleep late“睡懒觉”。译文：为了下午多睡一会儿，鲍勃关闭了闹钟。答案为A。　

29.

The bell　 ________the end of the period rang, ________ our heated discussion.

A. indicating…interrupting　　　　 B. indicated…interrupting

C. indicating…interrupted　　　　 D. indicated…interrupted

[解析]　 the bell在句子中作indicate和interrupt的逻辑主语，所以要用现在分词。答案为A。　

28.

I really appreciate　 ________ to relax with you on this nice island.

A. to have had time　　 B. having time　 　　　C. to have time　　 D. to having time

[解析]　 appreciate后接动名词作宾语。译文：我真的喜欢和你一起在这个迷人的小岛上放松一下。答案为B。

27.

Do let your mother know all the truth.She appears ________　 verything.

A. to tell　　　 B. to be told　　　　 　C. to be telling　　　 D. to have been told

[解析]　 tell是及物动词，后面要接宾语。因为在这个句子中，tell后面没有宾语，所以要用动词不定式的被动式。又因为知道了一切发生在告诉真相之前，所以要用动词不定式的完成式。译文：一定要把一切真相告诉你妈妈。她看上去已经知道了一切事情。答案为D。　

26.

_________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

[解析]　 首先确定为主动语态，然后根据already又可判断用完成时。译文：由于已经受到如此严重的污染，现在清理河道可能太晚了。答案为A。

25.

With a lot of difficult problems _______, the newly-elected president is having a hard time.

A. settled　　　　 B. settling　　　　 C. to settle　　　　 D. being settled

[解析]　 动词不定式to settle作difficult problems的定语表示现在或将来要解决的难题；过去分词settle作定语表示已经解决的难题；现在分词的被动式being settled作定语表示正在解决的难题。所提供的情境the newly-elected president is having a hard time说明新任总统现在和将来都有难以解决的问题，所以要用to settle作定语。答案为C。

24.

When _______, the museum will be open to the public next year.

A. completed　 　　B. completing　　　 C. being completed　　 D. to be completed

[解析]　 complete与museum是动宾关系，要用过去分词completed作状语，表示被动。译文：当这座博物馆建成后，将在明年向公众开放。to be completed作目的状语，不与when连用。答案为A。