InthepastthreeyearstheregreatchangesinBeijing.A.areB.willbeC.hasbeenD.havebeen为什么用复数啊?
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题目内容:
In the past three years there great changes in Beijing.
A.are B.will be C.has been D.have been
为什么用复数啊?
优质解答
changes是主语当然用复数了
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