periods

"There was a period of confusion following the announcement."

"Food rationing continued in the post-war period."

"My teacher told me to always use periods at the end of my sentences. "

""The brightness of this variable star changes in regular periods of about 30 days." "

"When she is on her period, she prefers not to go swimming."

"This is one of the last paintings Picasso created during his Blue Period."

"I have math class in second period."

"Gretzky scored in the last minute of the second period."

"The doctor said the periods of flu symptoms are usually about a week long. "

"The renovation project reached one of its major periods when the roof was finally completed. "

"The student practiced writing different kinds of periods, like questions and exclamations, to improve their grammar. "

""During the process of learning to ride a bike, there are periods of confidence and periods of doubt." "

"The teacher explained that elements in the same periods of the periodic table have similar numbers of electron shells. "

"Fossils from the Jurassic and Cretaceous periods show us what dinosaurs were like millions of years ago. "

"Scientists study the periods gene in fruit flies to understand how our own internal clocks work and affect our sleep patterns. "

"In music class, we learned that periods, consisting of an antecedent and a consequent phrase, create a complete musical thought. "

"The repeating pattern of rainy days every 10 days is a period of 10 days. "

"The project's many delays finally reached periods, and it was canceled. "