23. It is worth considering what makes “convenience” foods so popular, and ____ better ones of your own. (2008北京卷)

A. introduces　　 　　B. to introduce　　 　　C. introducing　 　　　D. introduced

22. I feel greatly honored ____ into their society. (2008北京卷)

A. to welcome　　　　　 B. welcoming　　　 C. to be welcomed　　　 D. welcomed

21. –Did the book give the information you needed?

　 –Yes. But _____ it, I had to read the entire book. (2008北京卷)

A. to find　 　　　　B. find　 　　　　C. to finding　 　　　D. finding

20. ______ that she was going off to sleep, I asked if she’d like that little doll on her bed. (2008北京卷)

　 A. Seeing　　　　　 B. To see　 　　　C. See　　　　　　 D. Seen

19. Susan wanted to be independent of her parents. She tried ____alone, but she didn’t like it and moved back home. (2008湖南卷)

A. living　　　　　 B. to live 　　　　C. to be living　　 　D. having lived

18. 　　　　the project as planned, we’ll have to work two more hours a day. (2008湖南卷)

A. Completing　　　　plete　　pleted　　　 D.To complete

17. The trees ___ in the storm have been moved off the road. (2008湖南卷)

　 A. being blown down 　B. blown down　 　C. blowing down 　D to blow down

16. 　　　　the website of the Fire Department in your city, and you will learn a lot about firefighting. (2008湖南卷)

A. Having searched　　 B. To search　　　 C. Searching　　　 D. Search

15. We finished the run in less than half the time ____.(2008江西卷C)

A. allowing　　　 　　B. to allow　　　 C. allowed　　　 　　D. allows

14. Please remain______; the winner of the prize will be announced soon. (2008辽宁卷B)

A. seating 　　　 　　　B. seated 　　　　　　 C. to seat 　　　　　　 　D. to be seated