I am enjoying cherry blossom viewing under the spring sky.

I enjoyed a picnic under the summer sky.

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 has completely gone crazy.

He seemed to have lost his mind after hearing the news.

This job is so hard it's maddening.