1. We're not sure.

2. I'm not sure yet.

3. Not sure whose, but interesting.

4. My reply, “I’m not sure.”

5. Yes, well, I'm not sure...

6. "I'm not sure," Liz said vaguely.

7. Not sure I should be driving.

8. I'm not sure. Probably around midnight.

9. I'm not sure. Maybe. --It's possible.

10. Not sure I'm loving this trend.

11. *Not sure even “Abominability” is a word

12. Not sure how long that will hold.

13. I'm not sure that I fully understand .

14. “Well, I’m not sure,” was the reply.

15. 11 I'm not sure. Probably around midnight.

16. I'm not sure about the weapon, though.

17. 2 'I'm not sure,' she replied evasively.

18. I'm not sure I'm following you, mayor.

19. And I'm not sure it ever was.

20. Frankly, I'm not sure I can make it.

21. I'm not sure I want her to change.

22. 'Is that John over there?' 'I'm not sure'.

23. Go reread that chapter if you're not sure.

24. Patty may have left, although I'm not sure.

25. I'm not sure what he is thinking about.

26. Not sure how that involves local law enforcement.

27. I'm not sure I wanna pick that up.

28. Not sure if the end justifies the means.

29. I'm not sure I can evaluate that, Mr....

30. I'm not sure he's equal to the task .

31. Not sure why he'd shift off from Bestness

32. I'm not sure of the chronology of events.

33. EW : It was. But we? re not sure.

34. 'I'm not sure about it,' he said weakly.

35. I’m not sure what you meant by Cringey

36. 'I'm still not sure,' he said at length.

37. Still not sure if your content crosses the line?

38. I'm not sure you should spoil him so much.

39. Go reread that chapter if you are not sure.

40. I'm not sure. I'd like a new CD player.

41. I'm not sure that "Babysitted" is colloquial

42. I'm not sure what else I can tell you.

43. She was not sure what his underlying motives were.

44. I'm not sure I have a home any more.

45. I'm not sure why I bother carrying a purse.

46. The thing of luminescence is not sure all gold.

47. 8 I'm not sure of the chronology of events.

48. I'm not sure if I'm pronouncing this correctly. Sentencedict.com

49. I'm not sure that I find her story credible.

50. I was not sure you could pull it off.

51. I'm not sure whether I should tell you this.

52. For a second, I'm not sure you're gonna save me.

53. I'm not sure your mother would like these new styles.

54. The novel ends Ambiguously, so I'm not sure what happened.

55. I'm not sure how long Quill can keep him distracted!

56. I mean, I'm not sure about the stealing thing, but...

57. I'm not sure that I understand. Go over it again.

58. Of course, I'm not sure they'll be up to it. "

59. I'm not sure I want to dig up the past.

60. I'm not sure you could cut that with a chain saw.

61. I'm not sure, so I've left a Super Mario question mark.

62. Historians are not sure about the construction period of this temple.

63. I'm not sure a lecture hall would meet the acoustic requirements.

64. I'm not sure the Committee approves of your methods, Director Hunley.

65. He stood awkwardly in the doorway, not sure what to say.

66. All time or all-time, not sure which one it is

67. Not sure walking in with the vice principal is the play.

68. I'm not sure why, but one needs parents to be vain.

69. I'm not sure what you're trying to pin on my daughter...

70. I'm not sure which professor, but I had a guardian angel.

71. But in a rush, I'm not sure if they died out.

72. Not sure if your apartment 's water temperature is hot enough ?

73. I'm not sure how much longer I'll be covering this one.

74. I'm not sure yet, but probably not more than 400 feet.

75. She's either a Spaniard or an Italian. I am not sure.

76. Not sure if you've set the right ad balance for your site?

77. I'm not sure why there is a hole in this particular man.

78. Not sure what you want to do with the spare key, but...

79. One should never criticize if one is not sure of one's facts.

80. I am still not sure how best to dispose of the shares.