English Conversation Practice - Chemical Explosion

Jeff: What was that loud boom?
Mark: There was a chemical explosion a few blocks away.
Jeff: Did anyone get hurt?
Mark: Yeah, over 50 people were injured.
Jeff: Do we need to evacuate the building?
Mark: Yes! Don't take the elevator.

1. What happened a few blocks away?
A parade
A chemical explosion
A fire
A car accident

2. What do Jeff and Mark need to do?
Evacuate the building
Join the parade
Put out the fire
Stay at work

3. What does Mark tell Jeff?
Stay in your office
Don't go outside
Call the boss
Don't take the elevator