51.

1. society
2. reality
3. dream
4. illusion

52.

1. approaches
2. characters
3. worlds
4. mazes

53.

1. in general
2. at present
3. in reality
4. at work

54.

1. to choose from
2. to choose
3. choosing from
4. chosen

55.

1. defects
2. drawbacks
3. limitations
4. disadvantages

56.

1. room
2. realm
3. range
4. boundary

57.

1. evolves
2. evolving
3. evolved
4. evolve

58.

1. simply
2. readily
3. exceptionally
4. simultaneously

59.

1. Aiding by
2. To aid by
3. Aided by
4. To be aided by

60.

1. human
2. original
3. realistic
4. microscopic

(Reference keys.)