If you spend a long time in a room where cotton dust is floating, you may cough.

I saw cotton dust floating in the factory.

He was working on the computer for a long time.

I like to spend the weekend with my family.

He wakes up every morning at sunrise.

She danced at the party.

He is coughing because of a cold.

A large cloud of dust was rising from the construction site.

Everyone fell silent when they heard the sound of the fire bell.

This old box contains many cotton flowers made by people in the past.