Quiz : Future Tenses

Lucy: When will I see you again?
John: I don’t know. I’m 1) ____________ to be busy this week. And I’ll 2) ___________ going to London on Saturday.
Lucy: Oh. But you 3) _____________ be here for my party, won’t you?
John: No, I 4) ___________ get back until Sunday evening.
Lucy: I was going to invite you.
John: Well I’m sorry I can’t come.
Lucy: What are you doing in London?
John: Oh, I’m just going 5) ___________ see one or two people. Look, I must go.
I’m cooking something that I think is 6) ____________ to boil over.
[WpProQuiz 28]