Pandora: When was the math test?
Olivia: What???
Iris: Yesterday
Olivia: Are you serious?
Olivia: There was a math test??
Pandora: I heard from Susan
Iris: It was yesterday
Iris: It wasn't that difficult 
Olivia: I didn't know!!!
Olivia: What should I do now?
Pandora: Talk to the teacher
Olivia: I was sick 
Olivia: When did she announce it?
Iris: On Monday
There was a math test yesterday. Olivia didn't know because she was sick. The teacher announced it on Monday. 