单选题 A: I'm sorry we are late. We missed the train.
B: ______.
A: Well, I got the time wrong and when we arrived at the station, the train had just left.

A、 It doesn't matter.
B、 Don't be late next time.
C、 What did you do?
D、 How did that happen?

【正确答案】 D

【答案解析】由下文的回答看出是问发生了什么事。