40 her.

"OK" I thought to myself," this is where I should have changed."

My best opportunity came a few days later when I saw a man 41 by himself waiting for the library to open ,so I sat down next to him and began a 42 .It was difficult to get started ,and even when I had to say goodbye, almost every 43 from my new friend had a tone (语气)of doubt in it ,And who could blame him?

People aren't used to making an 44 chat with a stranger. But a change, no matter how 45 it is needed, doesn't just happen ,It takes people like us to make it possible. I 46 you to take a small step out of your comfort zone and try to make someone's day a little brighter, Together, we can really make come 47 as a whole.

36. A. change B. explain C. learn D. show

37. A. trouble B. doubt C. wish D. opportunity

38. A. took B. dropped C. got D. pulled

39. A. come out B. stand by C. go back D. turn up

40. A. please B. greet C. help D. praise

41. A. sitting B. walking C. riding D. running

42. A. discussion B. lesson C. report D. conversation