It is important for each person to fulfill their role.

Watching a movie alone is enjoyable.

I went to see a movie by myself.

He has the ability to survive even in harsh environments.

He accepted my proposal and started the project.

I take classes every day.

He received training to survive alone in the wilderness.

He kept walking through the uncultivated land.

I am training for running every day.

I practice the piano every day.