问题描述：
how is your grandfather?
My grandfather __ for two years.
A.died B.has died C.has been died D.has been dead
这里为什么要用dead形容词呢?
My grandfather __ for two years.
A.died B.has died C.has been died D.has been dead
这里为什么要用dead形容词呢?
问题解答：
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