补全对话。

　　David：Hello．Office Centre．

　　Susan：Hi,is that you,David?　　1　　

　　David：Fine,thank you．And you?Susan,I'm so glad that you phoned．How is your study in London?

　　Susan：Everything is going on quite well．And how about your teaching?

　　David：OK．The students are very good．Oh,did I tell you about my trip to London?

　　Susan：Yes．　　2　　

　　David：I'm leaving tomorrow afternoon at two．

　　Susan：　　3　　

　　David：My flight number is BC 256 and I'll get to the Heathrow Airport at four．　　4　　

　　Susan：Oh,I'm afraid not．I have to bring my mother home from hospital at that time．

　　David：I see．It's all right．I can manage to find your place by myself．

　　Susan：Well,David,my friend Tom will go to meet you．

　　David：Oh,it's good．But I have never seen him before．　　5　　

　　Susan：He looks very strong and tall．He had thick and brown hair．Well,he'll call you when you arrive．I'm looking forward to seeing you．

　　David：Thank you,Susan．I'll see you tomorrow．

　　Susan：See you．

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