1.________ that he isn't adequate to the present job, he devotes all his spare time to studying professional skills.
A.To concern B.Concerning
C.Having concerned D.Concerned
[解析]句子的主语为 he，故用 concerned 担忧的，关心的。
[答案]D
2.________ untidily and ________ in a strange way, my brother must have appeared to the people ________ to be a silly boy.
A.Dressed; spoken; presents
B.Dressing; speaking; present
C.Dressed; speaking; present
D.Dressing; speaking; be present
[解析]dressed untidily 衣冠不整，表示状态，在句中作状语;句子的主语 my brother 与 speak 之间为主动关系，故第二空用现在分词作状语;present 作后置定语，表示“在场的”。
[答案]C
3.As a journalist, you should first decided what events ________ before you make some interviews, thus ________ unnecessary trouble.
A.to report; avoiding B.to be reported; avoiding
C.reported; to avoid D.to report; avoided
[解析]第一空为特殊疑问词+不定式;第二空为现在分词作结果状语，表示自然而然的结果。
[答案]A
4.Don't bother me. I am listening to the birds ________.
A.singing B.sing
C.to sing D.sung
[解析]listen to sb. doing sth. 听某人在做某事。
[答案]A
5.His girlfriend wore a______ smile when seeing the nice dress she wanted.
A.satisfied B.satisfying
C.being satisfied D.satisfy
[解析]修饰人的表情，声音，微笑应用 ed 形式的形容词。wear a satisfied smile 面带满意的微笑。
[答案]A
6. Our school forbids ________， that is to say, we are not allowed ________ at school.
A.to smoke; to smoke B.smoking; smoking
C.to smoke; smoking D.smoking; to smoke
[解析]forbid doing sth. 禁止做某事;be allowed to do 被允许做某事。
[答案]D
7.This soup is cold; it needs ________.
A. to heat B. to be heated
C. being heated D. heated
[解析]句意：这汤凉了，需要加热。need 后可接不定式作宾语;又因为 this soup 与 heat 之间为动宾关系，故用不定式的被动语态作宾语。
[答案]B
8.________ to our dream universities, we should devote all our time to our lessons.
A. To be admitted B. Admitted
C. Admitting D. To admit
[解析]句意：要想被我们理想的大学录取，我们必须把全部的时间投入到功课上。由语境分析，此处应用不定式作目的状语;又因为主语 we 与 admit 之间为动宾关系，故用不定式的被动形式作目的状语，故A项正确。
[答案]A
9.The government has taken measures ________ air quality.
A. to improve B. improved
C. being improved D. to be improved
[解析]句意：政府已经采取措施来改善空气质量。take measures to do sth.“采取措施干某事”;不定式作目的状语。
[答案]A
10.________ Joseph off at the airport, Sally finished her work earlier.
A. Having seen B. Seen
C. To see D. To be seen
[解析]句意：为了去机场给 Joseph 送行，Sally 早早地完成了工作。由句意可知，此处是动词不定式作目的状语。主语 Sally 与see 之间为主谓关系，故C项正确。
[答案]C
11._______ the theory, the scientists asked more than sixty college students to take part in the experiment.
A. Being tested B. To test
C. Testing D. Tested
[解析]句意：为了检验该理论，科学家们请了60多个大学生参加了试验。由语境可知，此处为动词不定式作目的状语，故B项正确。
[答案]B
12.Mr Huang told us to spend as much time as possible ________ our English studies.
A. to improve B. improved
C. improving D. on improving
[解析]句意：黄老师叫我们花尽可能多的时间来改进英语学习。由语境可知，此处为动词不定式作目的状语。我们多花时间的目的是为了改进英语学习，故A项正确。
[答案]A
13.For nearly three hours we waited for the decision, only ________ to come again the next day.
A. to tell B. telling
C. to be told D. being told
[解析]句意：我们等决定等了接近3个小时，却被告知第二天再来。由语境可知，此处表示的是出乎意料的结果，故应用不定式作结果状语;主语 we 与 tell 之间为动宾关系，故用不定式的被动形式作结果状语，C项正确。
[答案]C
14. In the morning you can get up only ________ all your equipment buried and you've got to dig it out.
A. to be found B. found
C. to find D. finding
[解析]句意：早晨你醒来，却发现你所有的设备被埋了，你不得不把它挖出来。由语境可知，此处发现设备被埋应是出乎意料的结果，故用动词不定式作结果状语;主语 you 与 find 之间为主谓关系，故应用不定式的主动形式，C项正确。
[答案]C
15.Some people try to knock me down, only ________ me more determined to do better.
A. to make B. makes
C. having made D. made
[解析]句意：有些人想把我打垮，却只会使我更下定决心把事情做得更好。分析语境可知，此处是有些人(some people)没有想到的结果，故用不定式作结果状语，A项正确。
[答案]A
