单选题It ____ over 10 year

问题补充：

单选题It____over10yearssincemygrandpa_______.A.is, diedB.is, has been deadC.has been, was deadD.was, has died

答案：

A解析本题考查的是固定句型，it is +一段时间+since +一般过去时，故选A

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