A. improved B. improving C. to improve D. improve

　　19. Even the best writers sometimes find themselves ______ for words. (2011浙江卷)

　　A. lose B. lost C. to lose D. having lost

　　20. Michael put up a picture of Yao Ming beside the bed to keep himself ________ of his own dreams.(2011重庆卷)

　　A. reminding B. to remind C. reminded D. remind

　　21. Lucy has a great sense of humor and always keeps her colleagues _______ with her stories.

　　A. amused B. amusing C. to amuse D. to be amused (10上海)

　　22. Laws that punish parents for their little children’s actions against the laws get parents .

　　A. worried B. to worry C. worrying D. worry (04重庆)

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

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

　　24. ____________ some officials, Napoleon inspected his army. (1984)

　　A. Followed B. Followed by

　　C. Being followed D. Having been followed by

　　25. When first______ to the market, these products enjoyed great success. (04全国II)

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

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

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

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

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

　　28. with the size of the whole earth , the biggest ocean does not seem big at all.(04湖北)

　　A. Compare B. When comparing C. Comparing D. When compared

　　29. ______from other continents for millions of years, Australia has many plants and animals not found in any other country in the world. (05湖北卷)

　　A. Being separated B. Having separated

　　C. Having been separated D. To be separated

　　30. ______ in a white uniform, he looks more like a cook than a doctor.(05湖南卷)

　　A. Dressed B. To dress C. Dressing D. Having dressed

　　31. ______ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns. (05上海卷)

　　A. Put B. Putting C. Having put D. Being put

　　32. ______for the breakdown of the school computer network, Alice was in low spirits.(06福建)

　　A. Blaming B. Blamed C. To blame D. To be blamed

　　33. ______ by a greater demand for vegetables, farmers have built more green house.(07浙江卷)

　　A. Driven B. Being driven C. To drive D. Having driven

　　34. Ideally ___ for Broadway theatre and Fifth Avenue, the New York Park hotel is a favorite with many guests. (08上海卷)

　　A. locating B. being located C. having been located D. located

　　35. _________ the right kind of training, these teenage soccer players may one day grow into the international stars. (09江西卷22)

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

　　36. ________with a difficult situation, Arnold decided to ask his boss for advice. (05北京春)

　　A. To face B. Having faced C. Faced D. Facing

　　37. ________ not to miss the flight at 15:20, the manager set out for the airport in a hurry.(09福建)

　　A. Reminding B. Reminded C. To remind D. Having reminded

　　38. No matter how frequently , the works of Beethoven still attract people all over the world. (2006广东卷)

　　A. performed B. performing C. to be performed D. being performed www.duhougan.cc

　　39. The country has already sent up three unmanned spacecraft, the most recent ___­­______ at the end of last March. (07山东)

　　A. has been launched B. having been launched

　　C. being launched D. to be launched