What kind of attitude should a manager take so as to have good understanding of the workers

A．Work and play are separate activities.
B．People should play more and work less.
C．People should work more and play less.
D．Work and play should sometimes be combined together.

A．The professor postponed the exam and will inform everyone when it’ll be held.
B．The professor phoned him about the postponing of the exam.
C．The professor is going to replace the exam.
D．The professor postponed the exam until Thursday.