轻松学英语：900句04.02.对话.1.等公交车

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　　Excuse me, I’ve been waiting here for 15 minutes.Do you know how often does No.3 run?
        　　It runs every 20 minutes. You must have missed it. When you came here,it should be here any minute now.
        　　It seems you got here at good time.
        　　Do you have a bus schedule?
        　　Yes, I do. You can go to transport department to get a bus schedule in a bus map.
        　　I see, thank you.