i hear that his father( )since 10 years ago.a.has died b.died c.was dead d.has been dead

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ihearthathisfather()since10yearsago.a.hasdiedb.diedc.wasdeadd.hasbeendeadihearthathisfather()since10

i hear that his father( )since 10 years ago.a.has died b.died c.was dead d.has been dead
i hear that his father( )since 10 years ago.a.has died b.died c.was dead d.has been dead

i hear that his father( )since 10 years ago.a.has died b.died c.was dead d.has been dead
d,dead是形容词,不表动词,死是瞬间动词

d has been dead