opportunist

"The mayor's decision to postpone the city's park expansion was motivated by the expediency of dealing with the current budget crisis. "

"The scholarship offered a valuable opportunity for students to pursue higher education. "

"Do you need a gift for that special someone?"

"He placed the glass on the table."

"an advance in health or knowledge"

"The community benefited from the new park, as it provided a safe place for children to play. "

"Airplanes did not always exist as a form of transportation."

"The United States is in an awkward situation with debt default looming."

""She helped me with my homework, and I helped others with theirs." "

"The enemy had the advantage of a more elevated position."

"We need some sort of principles to reason from."

"My credit in my teacher's eyes was high because I always completed my homework honestly. "