sheath

"She is investing time in studying for her exams to get a good grade. "

"The protective helmet was essential for the construction worker. "

"The dew on the grass was shimmering in the morning sun. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The family took their sick cat to the veterinarian for a check-up. "

"My brother is a talented electrical. "

"The library offered an extension on the due date for the overdue books. "

"The blacksmith hammered the hot metal into a horseshoe. "

"After the woodworker finished carving, he was careful sheathing the knife to prevent accidental cuts. "

"The thick walls were built for insulating the house from outside noise. "

"The electrician fixed the broken lights in our kitchen. "

"Condoms are designed to protect against sexually-transmitted diseases."