enforcer

"The well-trained dog was an obedient, always following commands like "sit" and "stay." "

"Follow that car!"

"The children physically exhausted themselves playing tag in the park. "

"Because she publicly criticized the new school rules, Maria was labeled a dissident by some of the teachers. "

"My sister is very helpful, especially when it comes to organizing things. "

"The student's opposition to the new school rules caused a disruption. "

"The large dog's loud barking was intimidating the small children playing in the park. "

"Everyone in the class needs to bring their textbook to the first lecture. "

"He is a student of life."

"The student council organized a fundraising event for the school library. "

"The police are there to enforce the law."

"We should confront him about the missing money."