airhole

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

"Clouds were forming interesting shapes in the sky. "

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

"The prisoners made their escape by digging a tunnel."

"The fisherman cast his line into the lake. "

"The dry-stone wall used a large, flat through to support the top stones. "

"The family owns several, a small plot of land behind their house. "

"chop wood; chop an onion"

"The lake froze solid."

"The runner was breathing heavily after the long race. "

"I brush my teeth regularly to prevent them from turning yellow."

"Before the big presentation, Sarah took a deep breath and felt more calm. "