sprocket

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

"The bicycle's chain smoothly turned the sprockets, propelling the bike forward. "

"The plants in the garden needed rainwater because it hadn't rained for a week. "

"The angry student perforated the paper with his pen, leaving several small holes. "

"The instructions for the homework assignment were too vague; the professor only gave unspecified guidelines, leaving us unsure of what to do. "

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

"The factory manufactured thousands of toy cars every day. "

"These hypotheticals serve no purpose until we have more information."

"The impossible of finishing the project by Friday became a reality when everyone worked late. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"Please enter your name here; "Your Name" is just a placeholder until you fill it in. "

"The difference in her haircut was noticeable immediately. "