He is watching TV.

His figure suddenly appears.

She decided to hide her secrets from prying eyes.

He is studying thermodynamics in depth.

Lassa fever is a serious infectious disease that is particularly prevalent in West Africa.

His enthusiastic cry livened up the entire venue.

His dream is to fly in the sky in a hot-air balloon.

My friend contracted Q fever.

The thermosphere is a part of the Earth's atmosphere, located above the stratosphere and the mesosphere.

He lives on a tropical island.