单选题
A、
I had worked
B、
did I work
C、
was I working
D、
would I work
【正确答案】
A
【答案解析】
[试题分析] 考查时态一致的掌握。
[详细解答] 所填与前面I had attended要保持时态的一致，所以选项A正确。
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