His behavior is causing a nuisance to everyone.

He works at the fire station every day.

This regulation was established to protect the lives of citizens.

We have started a program to prevent crime in the community.

We must act carefully to prevent accidents.

His behavior is a big trouble for me.

All citizens must comply with these regulations.

Please refer to the previous example.

This is the usual practice of our team.

I think this house needs a purification.