This area has a lot of unexploded ordnance left over from the war, so caution is necessary.

That landmine was a dud.

In my area, a summer festival is held every year.

Your cooperation is needed for this project.

He used a stone as a projectile.

You can still see the vestiges of this old castle.

I need you.

Please be careful when crossing the road.

Please cross the road with caution.

There are many children in this park.