Mr. Matsumoto is my best friend.

This method is very effective.

His smile was ephemeral, disappearing in an instant.

I'm always impressed by his astonishing talent.

He always has a critical attitude.

I can't keep up with his irregular schedule.

He always thinks about things from an objective perspective.

This product is popular nationwide.

He undergoes a health checkup periodically.

We need drastic reforms.