Tom says his good friend ,Brown,----in the air crash last year.So for a year.a.had died ;has been-dead b.died ;has been dead选哪个?为什么

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Tomsayshisgoodfriend,Brown,----intheaircrashlastyear.Soforayear.a.haddied;hasbeen-deadb.died;hasbeen

Tom says his good friend ,Brown,----in the air crash last year.So for a year.a.had died ;has been-dead b.died ;has been dead选哪个?为什么
Tom says his good friend ,Brown,----in the air crash last year.So for a year.a.had died ;has been-
dead b.died ;has been dead
选哪个?为什么

Tom says his good friend ,Brown,----in the air crash last year.So for a year.a.had died ;has been-dead b.died ;has been dead选哪个?为什么
b.died
主句是一般现在时,从句直接陈述事实即可,事实发生在去年,所以用一般过去时即可

b
last year一般过去时的标志。。。