This crisis might last for a long period of time.
...a period of a few months.
...for a limited period only.
...a period of economic good health and expansion...
He went through a period of wanting to be accepted...
The South African years were his most creative period.
...the Roman period...
No reference to their existence appears in any literature of the period.
...the most difficult periods of history.
...dressed in full period costume.
...replicas of period instruments.
They accompanied him during his exercise periods.
...periods of private study.
...taking his scripts to school in order to learn the lines in free periods.
I don't want to do it, period.