The manager promised to keep me ____ of where he was A.informed.B.informing 为...

问题描述:

The manager promised to keep me ____ of where he was A.informed.B.informing 为...
The manager promised to keep me ____ of where he was
A.informed.B.informing
为什么?不是keep sb doing吗?还有这句话要怎么翻?

经理承诺让我被告知他在哪,不仅keep sb doing也可以keep sb +adj这里的informed和我是被动关系,我被告知.