Answer: The circumstances that Ponyboys teacher is referring to is that he has missed a lot of school and if he comes up with a good semester theme he will pass Ponyboy with a C grade. The circumstances Ponyboy thinks that his teacher is referring to is that he was goofing up because he was in a lot of trouble.
Oedipus sends Creon to the oracle at Delphi to learn how to save Thebes. Creon reports that the city can only be saved by finding and punishing the murder of the previous king, Laius.