backdrafts

"He took a few cautious steps toward the cave."

"The liftoff will occur in exactly twelve seconds."

"I went to the park because the weather was nice. "

"The sudden announcement of a school holiday surprised everyone. "

"We need oxygen to breathe. "

"to enclose lands"

"The box containing my old toys was stored in the attic. "

"Turn the doorknob to open the door."

"The firefighters rescued a cat from the burning building. "

"The successful reintroduction of wolves to Yellowstone National Park has helped restore the ecosystem. "

"Construction workers heard loud explosions during the demolition of the old building. "

"Railway crossings without gates are highly dangerous."