Although reservations in advance are usually required in motels in busy areas, this is not always _______ in less crowded parts of the country.

A．dealing with the academic affairs of the university
B．ensuring that the students observe university regulations
C．evaluating students' performance by bringing them before a court
D．keeping up the students' enthusiasm for social activities

A．to live in a different university
B．to take a particular course in a different university
C．to live at home and drive to classes
D．to get two degrees from two different universities