问题描述：
-the train had left when I got there .- ____?So you missed the train?
-the train had left when I got there .
- ____?So you missed the train?
A Did it B,Had it
C Did you D .Had you
请问选择哪一个?为什么?
-the train had left when I got there .
- ____?So you missed the train?
A Did it B,Had it
C Did you D .Had you
请问选择哪一个?为什么?
问题解答：
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