His speech skillfully used interjections, captivating the audience.

He listened to the news with an apathetic face.

He shows an apathetic attitude towards everything.

Vitamin A is important for maintaining vision.

The A-side of this record is very popular.

He indulged in memories of his youth while listening to old hit songs.

He has a very passive personality.

What is your name?

In the old rice fields, the 'a' played a role in dividing the water.

In that era, 'あ' was used as a foot.