English Day by Day is designed for school students to improve their performance in the English language.
today you first had to "argument" your essays, i.e. highlight the important elements proving that you have done the job I expected from you (vocabulary, grammar, link words, ideas, ...).
Then we made a quick recap of what we had said before the vacation about the text and we finished talking about what Stella said in her long tirade and the reasons why she used reported speech to talk about what Philip had said to her when she visited him in London:
When Stella explains to Joe why she has decided to stand by Philip, she uses reported speech. It allows Joe to picture the scene but at the same Stella tries to shirk responsability for her difficult choice. She is in an ordeal; she is torn apart between her feelings for Joe and her engagement to Philip. That's why in the text she uses reported speech.
HW: you need to convert Philip's reported speech into the real dialogue that Stella and he actually had. Use Stella's reported version as a basis.