floor

"The students walked quickly to their classrooms before the bell rang. "

"Don’t move that beam! It supports the whole platform."

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

"My brother uses the underground to get to work every day. "

"The school's student parliament was summoned to discuss the new dress code. "

"The old house creaked as we walked across the floorboards. "

"There was a requirement of the government on citizens for paying taxes."

"Surprisingly, my sister decided to volunteer at the animal shelter this weekend. "

"The bookshelf was arranged horizontally, so the books lay flat instead of standing up. "

"The heavy box underlying the lighter one caused the whole stack to wobble. "

"He reinforced the handle with a metal rod and a bit of tape."

"The politician spoke at the school assembly about the importance of community involvement. "