stairwell

"The book tells the story of two roommates."

"The building of the bridge will be completed in a couple of weeks."

"Look, I found a ten dollar bill on the ground!"

"to enclose lands"

"The paleontologist carefully brushed away the dirt, revealing a fossil jawbone belonging to a very early mammal, a multituberculate. "

"The phrase "stairway to heaven" has a variety of cultural significances."

"The children ran up the staircase to get to their bedrooms. "

"The room has a wooden floor."

"To walk briskly for an hour every day is to keep fit."

"Wear safety glasses when operating an electric drill."

"The storm during all night. "

"The archer carefully examined the shaft of the arrow before shooting. "