1．
May: Hi, Mike. Long time no see.
Mike: Hi, May!
May: Where have you been these days? It’s been quite a long time (1) ．I last saw you in the library.
Mike: Well, I went to Hong Kong last month and stayed there (2) ．_half a month.
May: Why did you stay there so long?
Mike: Er, I went there (3) ．(attend) a meeting to discuss how to make sure of flight (4) ．(safe) between countries.
May: I called you many times, but I could not get through, (5) ．made me very angry.
Mike: Oh, I’m sorry. I got my phone number (6) ．(change) when I was in Hong Kong so that I didn’t have to spend so (7) ．on my phone calls.
May: Did you have a good time there?
Mike: Yes, a very nice time. I drove around with my friends. I also paid _ (8) ．visit to the Hong Kong Disneyland. It was the first time that I (9) ．_(see) the sea. It’s (10) ．(real) a wonderful experience.