H-11：have a finger in the pie 通晓一切

A:Where can I get the information, Kate?

A：凯特，我从哪儿能得到信息?

B:Ask John. He's sure to know about it.

B:问约翰吧。他一定知道。

A:Why?

A：为什么?

B:He has a finger in the pie.

B：他这人无所不知。