He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked为什么不选a,主语是第三人称谓语动词该用has吧？

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He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked为什么不选a,主语是第三人称谓语动词该用has吧？
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He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked为什么不选a,主语是第三人称谓语动词该用has吧？
He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked
为什么不选a,主语是第三人称谓语动词该用has吧？

He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked为什么不选a,主语是第三人称谓语动词该用has吧？
A 自从他来这个城镇已经住了20年了,从过去到现在用完成时
补充：如果你题目没打错不可能选D 的,主语是第三人称当然用单数has

因为从 since he came to this town这里可以判断出前面要用现在完成时，表示过去的过去所发生的事。

只能是A 主语是he z用has ，不用have。

He__there fo twenty years since hecame to this town.a.has worked b.worked c.work d.have worked为什么不选a,主语是第三人称谓语动词该用has吧？ Twenty. 佛字组词fo 这句话是不是存在错误?Homestake operated as a gold mine for one hundred twenty-five years before closing about nine years ago.是不是应该将 fo r或者 before 去掉? my friend Li Xiao knows my hometomn very well because he__there many times with me. 什么是CY-FO条款? 以 instead fo 造句 wife fo you love Learn fo know Learn fo konw you struggle fo you to 急...fo you im falling fo twenty序数词 Twenty-four twenty序数词 twenty-four twenty-four