He felt that his failure was the height of extreme regret.

I reported the incident to the police.

You need to report to the police.

He interpreted at the meeting.

I commute to work by train every day.

The new road has been opened to traffic.

This train goes directly to Tokyo Station.

This book is widely circulated throughout the country.

When the circulation of information becomes smooth, business becomes more efficient.

He is well versed in Japanese.