20、His father is a retired engineer in chief.He____in our steel plant almost for 40 years.
A.has worked B.had been working C.worked D.was working
20、C


科目:高中英語 來源: 題型:
His father is a retired engineer in chief.He____in our steel plant almost for 40 years.
A.has worked B.had been working C.worked D.was working
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