121.(04北京)________ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.

A. To wait　　 B. Have waited　　 C. Having waited　　 D. To have waited

110.(2003上海春招) Site will tell us why she feels so strongly that each of us has a role______ in making the earth a better place to live.

　A. to have played 　B. to play 　　C. to be played 　D. to be playing

(2004广东) 111.________ the programme, they have to stay there for another two weeks.

A. Not completing B. Not completed C. Not having completed D. Having not completed

(2004天津) 112.Don't leave the water ________ while you brush your teeth.

A. run B. running C. being run D. to run

(2004浙江) 113.Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.

A. knowing　 B. known　 C. being known　 D. to be known

(04全国III) 114.Reading is an experience quite different from watching TV; there are pictures________ in your mind instead of before your eyes.

A. to form　　 B. form　　 C. forming　 D. having formed

(04全国II) 115.When first ________ to the market, these products enjoyed great success.

A. introducing　 B. introduced C. introduce　 D. being introduced

(04全国II) 116."We can't go out in this weather," said Bob, ________ out of the window.

　A. looking　 B. to look　　 C. looked　　 D. having looked

(04全国IV) 117.It shames me to say it, but I told a lie when ________ at the meeting by my boss.

A. questioning　 B. having questioned　 C. questioned　 D. to be questioned

(04全国IV) 118.Alice returned from the manager's office, ________ me that the boss wanted to see me at once. A. having told B. tells C. to tell D. telling

(04辽宁) 119.I don't know whether you happen ________ , but I'm going to study in the U.S.A. this September.

A. to be heard　 B. to be hearing　　 C. to hear　　 D. to have heard

(04江苏) 120.The old man, ________ abroad for twenty years, is on the way back to his motherland.

A. to work　　 B. working　　　 C. to have worked　　 D. having worked

109.(2003上海春招) Unless______ to speak, you should remain silent at the conference.

　A. invited 　　 B. inviting 　　C. being invited 　D. having invited

108.(2003上海春招) ______the meeting himself gave them a great deal of encouragement.

　A. The president will attend 　　B. The president to attend

　C. The president attended 　　　D. The president's attending

107.(2003上海春招) Friendship is like money: easier made than ____.

　A. kept 　　　 B. to be kept 　C. keeping 　　D. being kept

106.(2003上海春招) Don't be discouraged. ______ things as they are and you will enjoy every day of your life.

　A. Taking 　　 B. To take 　　 C. Take 　　　 D. Taken

103.(2003北京春招) --Why did you go back to the shop?

　　　　 　　　　--I left my friend______ there.

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

　(2003北京春招)104. The manager,______ his factory's products were poor in quality, decided to give his workers further training.

　A. knowing 　　B. known 　　 C. to know 　　D. being known

　(2003北京春招)105. The man we followed suddenly stopped and looked as if _______ whether he was going in the right direction.

　A. seeing 　　 B. having seen 　 C. to have seen 　D. to see

97.(2003全国) The teacher asked us______ so much noise.

　A. don't make 　　B. not make 　 C. not making 　D. not to make

　(2003全国)98. ______ time, he'll make a first-class tennis player.

　A. Having given 　B. To give 　　C. Giving 　　D. Given

　(2003上海)99. The discovery of new evidence led to______.

　A. the thief having caught B. catch the thief C. the thief being caught 　D. the thief to be caught

　(2003上海)100. Generally speaking, ______ according to directions, the drug has no side-effect.

　A. when taking 　B. when taken 　C. when to take 　D. when to be taken

　(2003上海)101. An army spokesman stressed that all the soldiers had been ordered_______ clear warnings before firing any shots.

　A. to issue 　　 B. being issued 　C. to have issued D. to be issued

　(2003上海)102. There is a new problem involved in the popularity of private cars_______ road conditions need______.

　A. that; to be improved 　B. which; to be improved

C. where; improving 　 D. when; improving

96.(2002广东) The research is so designed that once______ nothing can be done to change it.

　A. begins 　　　B. having begun C. beginning 　　D. begun

95.(2002广东) It is said in Australia there is more land than the government knows______.

　A. it what to do with 　B. what to do it with C. what to do with it 　D. to do what with it