World War I was a large-scale war that lasted from 1914 to 1918.

This is a once-in-a-lifetime opportunity.

In our company, we always adhere to the principle of safety first.

He is recognized as the top person in that field.

He is troubled by his obsession.

The White House is the official residence of the President of the United States.

It often snows in January.

Shoichi's son, who is a first-year student at an elementary school, goes to school cheerfully every day.

Shoichi is my best friend.

Let's meet in the conference room at one o'clock.