Laura, a biologist, helps David with his questions. The system is down, so Laura ends the call politely. They agree to talk again later.
Vocabulary:
System: A set of connected parts working together.
Outage: A time when a system is not working.
Patience: The ability to wait without getting angry.
Email: A way to send messages using the internet.
Polite: Showing good manners and respect to others.
Practice more with this lesson:

