quadrennium

"The school implemented a strategic plan to improve student attendance. "

"we moved to this town a year ago;  I quit smoking exactly one year ago"

"My older sister is attending university to study engineering. "

"My neighbor, Mr. Papadopoulos, is a Greek who moved to America twenty years ago. "

"It looks weaker and weaker, the more I think about it."

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

"The three principal calendars are the Gregorian, Jewish, and Islamic calendars."

"Before I tackle the question directly, I must briefly review historical approaches to the problem."

"Set the tray there."

"I need to update my records to take account of the most recent transaction."

"My daughter's math homework asks her to write the number four. "

"The plans for many important buildings were once publicly available."