Hi, Hilly here! You are 15 minutes late. The game has started.
I'm terribly sorry. I have classes the whole day so I forgot all about it. I came to tell you I can't go with you today.
Good heavens! What's the matter with you? You seem so busy.
Yes, as a matter of fact, I have got a difficult project to deal with. I've been trying to do it for the last 3 days and I still haven't finished it. I will have a meeting with my tutor tomorrow morning and he wants to see my report. I'm awfully sorry.