【单选题】

One type of person that is common in many countries is the one who always tries to do as little as possible and to get as much (56) return as he can. His opposite, the man who has (57) for doing more that is strictly (58) and who is ready to accept (59) is offered in return, is (60) everywhere.

Both these types are entirely different (61) their behavior. The man who (62) is always talking about his" (63) "; he thinks that society should (64) him a pleasant, easy life. The man ( who is always doing more than (65) ) talks of "duties" ; he feels that the (66) is in debt to society.
The man who tries to do as (67) as he can is always full of (68) . For instance, if he has (69) to do something, it was because he was (70) by bad luck. His opposite is never (71) busy to take on a (an) (72) piece of work. So it is (73) that if you want something (74) in a hurry, go to the busiest man whom you have (75) in.
A．supplementary
B．spare
C．auxiliary
D．extra