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I was annoyed by my friend who came late for our appointment but did not botherto ask how long I ____.
A、was waiting
B、had been waiting
C、waited
D、have waited
【正确答案】：B
【题目解析】： 考查时态。该句中“等待”发生在“did not bother”之前，是“过去的过去”一直在持续的动作，因此用过去完成进行时态。