Question

Complete each gap with one word.
A: I once met someone famous.
C: Really? Who?
A: Well, was sitting in Manchester airport, wating for a flight to Warsaw. I remember, I was reading Harry Potter ........ the time. Suddenly, the lady next to me said 'Excuse me, ..... you enjoying that book?'
C: Who was it?
A: Well, I looked at her and I thought, 'I know you' , and then I realised it was J. K. Rowliong.
C: What? The author of the book you ........ reading? That's amazing! What did you say?
A: Well, to start ... I didn't know what to say, but fortunately, she was really friendly. ....... the end, we chatted for about ten minutes and I told her how much I love her books.

Answer 1

At
are
were
with
In
...............

Answer 2

I was reading Harry Potter at the time.
Excuse me are you enjoying that book?
The author of the book you were reading?
Well, to start with... 
In the end

Nie jestem pewien, jeśli pomyliłem się to najmocniej przepraszam :) Pozdrawiam.