I am busy with work during the day.

I work during the daytime.

In this museum, the entrance fee varies according to three age categories: adults, middle-aged, and children.

Kainaka is my best friend.

He gets excited about creampie in adult videos.

I am interested in the culture of China.

He is researching the functions of the midbrain.

He was watching the television relay.

He was relaying the soccer match on TV.

My younger brother is currently attending middle school.