Here are the correct forms of the words in parentheses:

31. He obeyed all your orders **truthfully**. (TRUTH)

32. I feel that this is going to be a **troublesome** matter. (TROUBLE)

33. We watched him do all those tricks with **amusement**. (AMUSE)

34. She glared at us **contemptuously** and left the room. (CONTEMPT)

35. His voice was full of **annoyance** when he rang me up. (ANNOY)

36. He is fond of **gardening** and is said to have green fingers. (GARDEN)

37. A **resumption** of diplomatic relations has been announced. (RESUME)

38. He suffered a **consequential** loss of hearing after the blast. (CONSEQUENCE)

39. The bereft woman was crying **pathetically**. (PATHOS)

40. Killing him was a **monstrous** deed. (MONSTER)

41. It was quite **touching** of you to join us in those grievous moments. (TOUCH)

42. Unfortunately, **realization** came too late. (REALIZE)

43. You are supposed to give a **factual** account of the events. (FACT)

44. When I looked down the steep rocky wall I felt a kind of **dizziness**. (DIZZY)

45. The teams scored one goal **piece**. (PIECE)

46. The **moisture** on the walls was utterly unhealthy. (MOIST)

47. The **tidiness** of his room was impressive. (TIDY)

48. Be **reasonable** for a change, will you? (REASON)

49. Could she give me a rough **approximation** of the likely cost? (APPROXIMATE)

50. His behavior was **graceful** all through the evening. (GRACE)