51.

1. exasperation
2. expenditure
3. exertion
4. execution

52.

1. initiation
2. evidence
3. incidence
4. indication

53.

1. in accordance with
2. at the expense of
3. in favor of
4. for the sake of

54.

1. every
2. ordinary
3. regular
4. average

55.

1. weight
2. amount
3. degree
4. quality

56.

1. starved
2. dying
3. full
4. ignorant

57.

1. check-up
2. exertion
3. diagnosis
4. inspection

58.

1. of course
2. at all
3. after all
4. by far

59.

1. developing
2. suffering
3. diagnosing
4. complaining

60.

1. consequently
2. subsequently
3. precipitously
4. surprisingly

(Reference keys.)