要求知道

I know they have made the most unreasonable demands on you.

我知道他们向你提出了最无求。

I know that they made the most unreasonable demands on you.

我知道他们对你提出了最不合求。

The doctor asked him to fill out one form after another, but in suspence as to what they were for.

医生求他另一份表格后，但焦急地知道它们(应该表格内容)什么。