Question 13 is based on the conversation you have just heard.

W: How are things going, Roald?

M: (12) Not bad, Jane. I’m involved in several projects and it’s a long working day. But I’m used to that so it doesn’t bother me too much.

W: I heard you have moved to a new house in the suburb. How do you like commuting to London every day? Don’t you find it a string?

M: (13) It was terrible at first, especially getting up before dawn to catch that 6:30 train. But it’s bearable now that I’ m used to it.

W: Don’t you think it’s an awful waste of time? I couldn’t bear to spend three hours sitting in a train every day.

M: (14) I used to feel the same as you. But now I quite enjoy it.

W: How do you pass the time? Do you bring some work with you to do on the train?

M: (15) Ah, that’s a good question. In the morning, I just sit in comfort and read the papers to catch up with the news. On the way home at night, I relax with a good book or chat with friends or even have a game of bridge.

W: I suppose you know lots of people on the train now.

M: Yes, I bumped into someone I know on the platform every day. Last week I came across a couple of old school friends and we spend the entire journey in the bar.

W: It sounds like a good club. You never know. I may join it too.

(13). Which train does the man take to work every day?

解析：细节理解题。根据对话可知，男士说他要很早起床，去坐6:30的火车。由此可知男士每天乘坐6:30的火车去上班。故选择B项。