She'd had no morning sickness, after all, and a single missed period meant nothing by itself.
It was the single most creative period in modern Chinese history.
No more than 10 have ever graduated on a single period.
That was the longest single period Friday had spent on one of his walks.
The governor had a term of five years to work in office and can be re-elected for another single period.
They scored a goal in every single period so far.
His whole world had turned inside out in a single twenty-four-hour period.
However, trills may also be produced with only a single period.
But the best is to concentrate all my attention during a single period.
Others believe that there was only a single, extended period of settlement.