Atsujiro is my best friend.

Atsuhiro is my best friend.

Mr. Atsuzawa is my best friend.

What will you use this empty box for?

I go to school with my lunchbox every day.

I go to school with a lunchbox every day.

Where is my toolbox?

He opened the wooden box and checked its contents.

He heated the iron in the blacksmith's shop using a bellows.

She opened the jewelry box and found a new necklace.