Students have to spend a period of four years to complete the program.
While on the council, he spent a period as Chairman.
He then spent a period reporting from across Africa for the service.
Students who take Technology spend a period of class one to three times a week in the computer lab.
During that time, some spend long periods doing nothing or just watching television.
The Prince seems never to have spent an extended period of time there.
He spent an extensive period of time in Italy, from 1613 to 1627.
He spent long periods in his room with the door locked.
His academic career was interrupted, however, by a period spent in politics.
In the late 1990s, the group spent a long period of inactivity.
