He is knowledgeable about human affairs.

Choosing a leader for the new project is very important.

In medical classes, we learn about the structure of the human body.

He is suffering from inflammation of the renal pelvis.

That issue is still unsettled.

We installed a projector to project the movie.

My father is a doctor.

He takes good care of his beloved car.

Let's use this cart to carry the luggage.

The duty of a taxpayer is to pay taxes accurately.