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-How long in the factory? -Since 1990． [ ] A．were you working B．have you been wo

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-How long in the factory? -Since 1990． [ ] A．were you working B．have you been wo

－How long ________ in the factory?

－Since 1990．

[]

A．were you working

B．have you been working

C．had you been working

D．will you work

试题答案

答案：B

解析：

该题考查现在完成进行时。

标签：factorysincethehowlong

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