Altostratus clouds are spreading in the sky, it looks like it's going to rain.

His room was empty of air, making it hard to breathe.

The altitude of this airplane is 10,000 meters.

Please be careful not to leave anything behind when you get off the bus.

The stratus clouds cover the sky, and no sunlight reaches us at all.

When I looked out the window, it was raining.

This virus is spreading rapidly.

The sky is very beautiful, isn't it?

Seeing the empty cup, he poured another cup of tea.

He can recite the poem by heart.