请阅读下列短文，理解其大意，然后从每小题所给的A、B、C三个选项中，选出一个能填入空白处的最佳选项，并在答题卡上将该项涂黑。

　　I know a Catherine who is smart, educated and interesting. But I avoid her because she never   36   complaining (抱怨)!For years, I fought against my feelings, because I really like and admire her, but I’ve found I just can’t be her friend. Her world is    37    “buts…”. The trip would have been nice, but the drive was too long. The food was good, but the light of the restaurant was too    38  . The hotel was too hot, the bed hurt her back and the room service was too slow. Her complaints were   39   changing me. Months ago, my best friend Daisy was listening to me complaining about Catherine     40    she just became really angry. “Either break up with her, or leave me alone.” She shouted at me, “I’m tired of listening to your complaining.” Her honesty surprised me, and I began to keep myself away from Catherine. Later, I did   41   her.

　　Now I try to remain happy and positive ( 积 极 的 ) about life, and find friends of the same. There’s been scientific research lately. It shows that people who find   42   to be thankful for their lives are actually happier, and I believe that is true. Endless complaining seems to control your life if you let it come into your brain. And too much complaining will actually make your life    43   .

　　Some people take “gratitude ( 感激之情) walks” every day, where they    44    their lives in a positive way. By developing a grateful attitude, you can be turned away from what’s troubling you, and   45   what makes you happy. Then you will have a beautiful life.

　　36. A. keeps       B. stops        C. enjoys

　　37. A. full of       B. far from     C. famous for

　　38. A. noisy       B. strong        C. dirty

　　39. A. hardly       B. suddenly     C. silently

　　40. A. until        B. because      C. unless

　　41. A. choose       B. help        C. forget

　　42. A. reasons       B. excuses     C. questions

　　43. A. busier       B. longer        C. worse

　　44. A. give away    B. depend on    C. think about

　　45. A. against       B. toward      C. through