题目内容：
Susan:I'm so glad to see you, David.56 has been such a long time. How are you? David:I' m fine, and you? Susan:I' m just wonderful. God, time goes by so quickly ! Are you going to the air qualityconference in London?
David:I am. And I' m really glad to see you. Just last night I found your name in the con-ference materials, but it didn' t come to my57 that we would meet on theplane.
Susan :I' m afraid I haven' t had time to look at58 conference materials very carefully.I had no idea you were coming, but I am certainly glad to see you. I was feelingvery nervous about going there59 friends.
David:I can imagine. My English has gotten not so fluent since I returned from the UnitedStates,60 I'm rather nervous myself. But I saw that you were61 (give)the most important talk at the conference.
Susan:62 (frank) speaking, I' m scared to death about it.
David:I' m just giving a talk in one of the workshop sections, and I hope I won' t make allof you63 (disappoint).
Susan:But your English is much64 (good) than mine.
David:But you're now the Director of the Air Quality Institute, so you65 know the
technical terms.
Susan:Maybe. But I still can' t understand totally a lot of technical terms in my field.
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