This album features a famous singer.

Christopher is my best friend.

Stanford University is a world-renowned university.

I am planning to go to Hannover, Germany next week.

My father likes to tell dad jokes.

The human immunodeficiency virus destroys the immune system, making the body unable to fight disease.

It is important to learn about the prevention and treatment of the human immunodeficiency virus.

He was dragging the heavy luggage.

Steam is rising from this pot.

Please open the door.