46. It's only about five walk to the nearest bank.(minute)
47. The day of this month is a special day for us,because it is the day when we always have a family gathering.(thirty-one)
48. Nobody but two girls enjoying the programs.(be)
49. Did they have great fun the cartoon film Turning Red this afternoon?(watch)
50. Tell the children with fire.(not play)

46. minutes'
47. thirty-first
48. is
49. watching
50. not to play

51. The earthquake the small village two halves.(把……分开)
52. It's a good thing for teenagers to since they have grown up.(自己做决定)
53. learning (不仅……而且)thinking donates a lot to our growing up.
54. We should give more care and help when they cross the street.(盲人)
55. You should everything you did.(对……有责任)

51. divided; into
52. make their own decisions
53. Not only; but also
54. the blind
55. be responsible for

Life in the Future：for Better or Worse?
Many students are optimistic(乐观的)about the next fifty years. They think that the world will be a better place than it is now and our lives will be greatly improved. As a result, people will have a higher standard of living and live longer.
However, other students are worried about the future. They say the world will become more crowded. Therefore, we will have even more environmental problems and live in a world with less energy available.
In my opinion, I think we will find ways to solve our problems and everyone will live more happily.

They think that the world will be a better place than it is now and our lives will be greatly improved. As a result, people will have a higher standard of living and live longer.
       However, other students are worried about the future. They say the world will become more crowded. Therefore, we will have even more  environmental problems and live in a world with less energy available.
        In my opinion, I think we will find ways to solve our problems and everyone will live more happily.