32. I regret _____ hard at school, or I would have succeeded in passing the exam.

　 　A. not to work　　 　　

　　 B. having not worked　

　　 C. to have not worked　

　　 D. not having worked

31. We should prevent such a silly mistake _____ again.

　 　A. occurring　　　 　 　　　 B. to occur　　

　 　C. to be occurred　　　 　 　D. from being occurred

30. _____ full preparations, we decided to put off the meeting till next week.

　　 A. We did not make　　　　 　B. Having not made　　

　 　C. We had not made　　　　 　 D. Not having made

29. I’m examining the article he has just finished _____ the possible mistakes in it.

　 　A. being corrected 　　　　 B. to correct　　

　 　C. corrected　　 　　　　　 　D. having corrected

28. Having passed all the tests, she felt a great weight _____ off her mind.

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

27. New ideas sometimes have to wait for years before _____.

　　 A. being fully accepting　

　　 B. fully accepting　

　 　C. having fully accepted　

　　 D. fully accepted

26. How could he get the plan _____ without any one to support him?

　 　A. to carry out　　　　　　 　B. carry out

　 　C. carrying out　　 　　　　 D. carried out

25. The sun was shining brightly, _____ everything there _____ more beautiful.

　 　A. making; look　　　　

　　 B. to make; looked　

　　 C. and made; looking　

　　 D. and making; be looked

24. Don’t worry. I’ll have it _____ and get someone _____ it to you tomorrow.

　 　A. typed; send　 　　　　　 　B. to type; to send　 　

　 　C. type; send　 　　　　　　 D. typed; to send

23. Seeing the soldiers well _____ for the flood-fight, the general nodded with satisfaction.

　　 A. prepare　　　　B. preparing　　 C. prepared　　　　D. having prepared