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.

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

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

This virus is spreading rapidly.

When I looked out the window, it was raining.

He can recite the poem by heart.

The sky is very beautiful, isn't it?

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