问题标题:
11.Whenandwheretobuildthenewfactory____yet.A.isnotdecidedB.arenotdecidedC.hasnotdecidedD.havenotdecided为什么选A,不选C?
问题描述:

11.Whenandwheretobuildthenewfactory

____yet.

A.isnotdecidedB.arenotdecided

C.hasnotdecidedD.havenotdecided

为什么选A,不选C?

承彦回答:
  C不是被动语态
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