It is important to learn about the prevention and treatment of the human immunodeficiency virus.

Mr. Masuda swims in the pool every day.

This picture of mandarin ducks represents the beauty of ancient times.

Have you ever seen a commuter train packer pushing passengers into the train?

I was born and raised in the town of Shimonin.

Mr. Uonokai is my best friend.

He sent a reminder about tomorrow's meeting by email.

I reminded him about the meeting tomorrow.

He is using an awl to sew leather.

The call of the northern mockingbird is very beautiful.