Suekazu is my best friend.

Sueyoshi is my best friend.

You need to be mentally prepared before the exam.

We have a reserve fund for emergencies.

That shop is still in preparation.

That remark earned him frowns from those around him.

He bought too much on credit, and his debt increased.

He bought a new car on credit.

It is important to stock up on food before an earthquake.

Because an earthquake forecast was issued, I stocked up on food.