听力原文

W: Jim will call on us this afternoon. Do you know where he is now? M: Er... wait. Let me see. He has sent two messages saying that he’s done with his work at the office and got a taxi and... and he’ll arrive in twenty minutes. W: We can’t keep him waiting outside our home. We have to hurry. M: But it takes at least half an hour to get to the city center by bus. Look at the traffic. W: Let’s get off. We can save at least twenty minutes by walking through the park. M: Are you sure? W: Yes. A hundred percent. 听下面一段较长对话，回答以下小题。