38. Mrs. White found her husband surrounded by letters and papers and _____ very worried.

　 A. looking　　　　　 B. looks　　　　 　C. look　　 　 D. to look

37. Mr. Green is said _____ an experiment to prove the new method of solving the problem when young.

　　 A. to do　 　　　 　 　　 B. to have done　　 　 　 C. to be doing　 　　　　　　 　D. to have been doing

36. You will see this product made in this factory _____ wherever you go.

　　 A. to be advertised　　 　　　　 　B. advertised　　 　 　C. advertise　　 　　　　　　 　D. advertising

35. _____ the big snake, the little girl stood under the tree _____ to death.

　 　A. Seeing; frightened 　　　　 B. Seeing; frightening　 　 　C. Seen; frighten　 　　　　　D. To see; frightening

34. _____ as the most excellent student in her university, as most classmates had expected, made her parents very happy.

　　 A. Mary was chosen　 　　 B. Mary chosen　 　　 C. Mary being chosen　 　　 D. Mary’s being chosen

33. _____ and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery.

　 　A. Tiring; to admire　　　　 　B. Being tired; admiring　 　 　C. Tired; to admire　　　　　 　D. Tired; admiring

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. _____ 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

30. 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

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

　　 A. being fully accepting　　 　　 B. fully accepting　 　 　C. having fully accepted　　 　　 D. fully accepted