Mr. Smith works as a government official now, but he ______ in a middle school for 5 years. A. has ...
2023-01-07 21:24:49 92次 河北省2010届高三押题卷（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Mr. Smith works as a government official now, but he ______
in a middle school for 5 years.
A. has worked B.
worked C. had worked D. had been
working
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