He__in IBM to sell computers for five years and is now running a successful business of his own!Aworked Bhas been worked 选哪个 为什么

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He__inIBMtosellcomputersforfiveyearsandisnowrunningasuccessfulbusinessofhisown!AworkedBhasbeenworked

He__in IBM to sell computers for five years and is now running a successful business of his own!Aworked Bhas been worked 选哪个 为什么
He__in IBM to sell computers for five years and is now running a successful business of his own!
Aworked Bhas been worked 选哪个 为什么

He__in IBM to sell computers for five years and is now running a successful business of his own!Aworked Bhas been worked 选哪个 为什么
答案是A 一般过去时态 这是对过去事实的叙述 与现在没关系 故不能用现在完成时

B,for +time,完成时

has been working
和and连接的is now running对等的时态,用worked就不对等了。

A
不应该用被动和完成时,故排除B