When he was the director in the plastic plant he ______ together with the workers.A.has w

外语类 专四 已帮助 人

When he was the director in the plastic plant, he ______ together with the workers.

A.has worked

B.had worked

C.had been worked

D.used to work

请帮忙给出正确答案和分析,谢谢!

热搜:在公制与英制换算中,1in等于()。