William and Jonathan's Summer Holiday Plans

William: Do you know where you are going this summer for your holiday?
Jonathan: Yes, I’m visiting my friend in Greece. First, we are planning to spend a week in Athens, and then we are sailing around a Greek island. a) _______________________________________________________?
William: I’m not going anywhere. I’m staying in London. b) _______________________________________________________.
Jonathan: Oh. That’s nice, but I think you will be bored in London all summer.
William: c) _______________________________________________________.
Jonathan: Well, you know that you can come to Athens with me if you want. It won’t cost you much because we can stay at my friend’s house.
William: That’s a great idea!
Jonathan: d) _______________________________________________________.