【答案解析】[听力原文] 6-7 M: It took me three hours to get home yesterday.I was exhausted. W: Oh no.What happened? M: There was an accident and the train was cancelled. W: And what did you do then? M: I waited first for another train.But then I learnt no train would come until two hours later.So I had to switch to a bus and walked about half an hour. W: Terrible.Not again.