I don't remember where_in that city when he was young.

问题描述:

I don't remember where_in that city when he was young.
A he has worked Bhe worked
为什么B不A呢!

has worked是现在完成时,强调的是某一动作持续到现在仍然有影响;he worked 是一般过去时,只对过去时间产生影响句意是:我不记得年轻时在那座城市的哪里工作.他过去在那里工作但现在不是,并没有对现在造成影响,所以选B.