“让您久等了”如何翻译？

Sorry to have kept you waiting for a long time. 不定式最好用完成形式。

Sorry for keeping you waiting
抱歉，让你久等了。

kept you waiting(过去式)

Sorry for keeping you waiting for so long.

sorry to keep you waiting/sorry to make you wait.

英语的精髓:怎么简单怎么说!那种语法完美的句子通常都不是好的口语.

I am sorry for having kept you waiting for such a long time.