The window is wide open, and fresh air is flowing into the room.

I opened the window all the way.

The last girlfriend was very beautiful.

I have been to Japan three times before.

Last year's sales increased by 10% compared to this year.

He bravely fought at the frontline of the war.

He made good use of his time and learned a new skill.

He is truly a good person, always helping people.

The typhoon affected the whole country.

Natural selection plays an important role in the evolution of organisms.