I woke up to the twittering of birds in the morning.

The Nanboku-chō period is a part of Japanese history.

Asaki-san is my best friend.

Eating breakfast every day is good for your health.

The air in this room is fresh.

The altitude of this airplane is 10,000 meters.

What will you use this empty box for?

I enjoyed a picnic under the clear sky.

He wants to make a car that can fly in the air.

He did aerial photography using a drone.