◎ 题干
I first met Lisa three years ago when we __________ at a radio station together.
[     ]
A. have worked
B. are working
C. were working
D. worked
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I first met Lisa three years ago when we __________ at a radio station together.[ ]A. have workedB. are workingC. were workingD. worked…”主要考查了你对  【过去进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。