Why did the man get home late? [originaltext]M: It took me three hours to get ho

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．