He chose euthanasia to be freed from the pain of his illness.

He died from overwork.

Yoroshiku, please do your best to pass the exam tomorrow.

I was watching the setting sun in the park.

He used sonar to explore the seabed.

Every night, he starts working at midnight.

The inside of the train was crowded.

We have a duty to pay taxes.

The children are playing in the sandpit.

He called himself an anarchist and was opposed to the authority of the government.