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"The poor ventilation in the classroom made it difficult to concentrate. "

"It is difficult to provide for my family working on minimum wage."

"During the military exercise, the paratrooper jumped out of the plane and floated to the ground. "

"The horizontal of the classroom desk is sturdy enough to hold a large stack of books. "

"Originally, this paper was white, but over the years it has yellowed with age."

"Saying that the earth is flat is an unintelligent statement. "

"The outnumbered soldiers cheered when they saw the reinforcements arriving to help them in the battle. "

"The wildfire devastated the forest, leaving behind only charred trees and ash. "

"The company established a new policy to improve employee safety. "

"We flew over the city in a helicopter."

"The earthquake shook the school building during recess, causing some minor damage. "

"The new school year will cover a vast territory, from basic math to advanced science. "