11._______ from the outer space， our earth looks like a water-covered ball. 【 C 】
A. Having seen
B. Seeing
C. Seen
D. Having been seen
【答案解析】：根据分词结构的逻辑主语分析，选项A、B、D都不能和主句中的主语构成逻辑的主谓一致的关系。只有选项C是正确答案。
12.I don‘t mind _______ the decision as long as it is not too late. 【 B 】
A. you to delay making
B. your delaying making
C. your delaying to make
D. you delay to make
【答案解析】：这是一个带有逻辑主语的动名词结构。依据前面所讲，逻辑主语应是一个带有形容词性的物主代词，其后的动词delay也应该是一个动名词。
13.The picture _______ on the wall is painted by my nephew. 【 B 】
A. having hung
B. hanging
C. hangs
D. being hung
【答案解析】：本题考查现在分词作定语的用法。根据句意“墙上挂的那幅画是我侄子画的”，可知空白处所填的动词形式在句中作定语，解题关键在于分析picture与hang之间的逻辑关系。
14._______ such heavy pollution already， it may now be too late to clean up the river.【 A 】
A. Having suffered
B. Suffering
C. To suffer
D. Suffered
【答案解析】：本题考查分词短语作状语的用法。分词作状语，其逻辑主语必须是句子的主语，而本句的主语看似是it，其实它为形式主语，真正的主语为不定式，而不定式省略了逻辑主语for people，所以应用现在分词，又因already，应用完成时。
15.They pretended to be working hard all night with their lights _______. 【 C 】
A. burn
B. burnt
C. burning
D. to burn
【答案解析】：burn“点燃、发亮、发光”，是不及物动词，所以和their lights是主动关系，所以用现在分词。
16.“Well， I‘ll tell you a secret ……” said the boy， with his mouth almost _______ my ear. 【 B 】
A. touched
B. touching
C. touch
D. to touch
【答案解析】：本题考查with 的复合结构。his mouth与touch之间是主动关系。
17.I don‘t feel like _______ anything now. 【 B 】
A. to eat
B. eating
C. having eaten
D. to be eating
【答案解析】：“feel like +doing sth.”，表示“想做某事”，后面只能跟动名词形式。
18.Since he left the university， he _______ in an accounting company. 【 A 】
A. has been working
B. had worked
C. had been working
D. was working
【答案解析】：本题考查时态。 Since引导的从句使用了一般过去时态，表明主句动作从过去开始一直持续到说话时间，因此用现在完成进行时态。
19.By the time the tour ends， the football team _______ twenty matches in four countries. 【 C 】
A. will play
B. will be playing
C. will have played
D. will have been playing
【答案解析】：本题的考点是：将来完成时，将来完成时表示将来的某个时间已经完成的动作。by the time 后面的句子中，主句的谓语动词一般用完成时，这个句子的意思是：等到巡回比赛结束的时候，这支足球队已经在四个国家打了20场比赛了。
20.People who can neither hear ______ speak talk to each other with the help of their fingers. 【B 】
A. or
B. nor
C. but
D. and
【答案解析】：neither…nor…是固定短语，意思是：既不…也不…。
