He is a genius, but even experts sometimes make mistakes. He also makes mistakes sometimes.

In order to solve this problem, first, we need to divide the whole into several parts.

The pupil of her eyes was a deep blue, like the sea.

She was spinning thread on a spinning wheel.

The roof of this house is made of thatch.

My younger brother caught the influenza.

My stationery is in the desk drawer.

He is observing stars using his new telescope.

Cell division is one of the basic processes of life.

The police caught the thief.