44. The graduating students are busy 　　　　material for their reports.

　 A. collect　　 　 B. to collect　　 　　 C. collected　　 　　 D. collecting

43. I had to shout to make myself 　　　　above the noise.　

　 A. heared　　 　 B. hearing　　 　　　 C. heard　　 　 D. to hear

42. He walked down the hills, 　　　　softly to himself.　

　 A. sing　　 　　　 B. singing　　 　　　 C. sung　　 　　 D. to sing

41. At this moment the bell rang 　　　　　the end of class.　

　 A. announce　　 　　 B. announcing　　 　　　 C. announced　　 D. to announce

40. The child sat in the dentist's chair 　　　　.　

　 A. tremble　　 　　　 B. trembling　　 　 C. trembled　　 　　 D. to trembled

39. Properly 　　　　　　with numbers, the books can be easily found.

　 A. marked　　 　　　 B. mark　　 　 C. to mark　　 　　 D. marking

38. Were you 　　　　when you saw that wild animal?　

　 A. fright　　 　 B. frightening　　 C. frightened　　 　 D. frighten

37. 　　　　　the composition, John handed it to the teacher and went out of the room　

　 A. Writing　 B. Having written 　 C. Written　　 　　　 D. Being written

36. "Can you read?" Mary said 　　　　　to the notice.　

　 A. angrily pointing　 B. and point angrily　　 C. angrily pointed 　 　　　 D. and angrily pointing

35. The visiting Minister expressed his satisfaction with the talks, 　　that he had enjoyed his stay here.

　 A. having added　 B. to add　　 C. adding　　 　　　 D. added