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"The school's hierarchy is clear: the principal is at the top, followed by the vice-principals, then teachers, and finally, the students. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The teacher is announcing the winners of the science fair. "

"The teacher explained the lesson thoroughly throughout the entire class period. "

"We celebrate Christmas with our family every year."

"The shelf is projecting about a foot from the wall. "

"The bicycle's gears are a complex mechanism that converts the rider's pedaling motion into forward movement. "

"The swing set had a wooden crosspiece connecting the two vertical posts, providing support for the swings. "

"The clockmaker carefully adjusted the tiny gears inside the antique clock. "

"The carpenter built a new wooden bookshelf for my bedroom. "

"Inspect the system for leaks."

"The teacher's loud voice reverberated through the empty classroom, echoing for several minutes after she had stopped speaking. "