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—Are you a teacher? —No, but I ________ once. I worked in a middle school for three years.
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—Are you a teacher? —No, but I ________ once. I worked in a middle school for three years.
A、am
B、will
C、do
D、was
时间：2021-09-02 11:59
关键词：
安徽教育在线
安徽广播电视大学
土木工程
答案解析
D
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