oakum

"Separate the articles from the headings."

"The old plumber worked with lead pipes in the school's plumbing system. "

"Be sure to finish your homework before you go to bed!"

"He studied masonry for five years."

"Asphalt, composed of oil and sand, is a widely used material for roads."

"The city's economy relies heavily on shipbuilding because many people work in the shipyards. "

"He struggled to kindle the campfire with damp wood. "

"The project consists of three main parts. "

"The architect planned the building for the client."

"The new house needed extensive plumbing work, including replacing the old pipes and installing a new water heater. "

"The farmer hackled the flax to separate the fibers for making strong rope. "

"My grandfather helped me with my math homework. "