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Is Runyang Bridge open to the public yet?Yes.It__ for almost

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Is Runyang Bridge open to the public yet?Yes.It__ for almost one and a half months.
A has opened B has being opened
C has been open D was open
分析
C be open to对..开放,这里用现在完成时 表示到现在为止开放了几乎一个半月了!
再问: 请问 has been open 是什么形式,现在完成时的被动:has/have been +过去分词吗?
再答: been是be的过去分词 open是形容词,