He is watching TV.

His figure suddenly appears.

She decided to hide her secrets from prying eyes.

He has claustrophobia and is afraid to ride in elevators.

He participated in many intercultural activities to overcome his xenophobia.

In this chemical reaction, a specific isotope is produced.

She wrote her name in cursive script.

This sentence is written in bold typeface.

This pathogen is very dangerous to humans.

There is a possibility that unknown lifeforms exist on this planet.