要求知道

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

我知道向你提出了最无理的要求。

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

我知道你提出了最不合理的要求。

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

医生要求另一份格后，但焦急地要知道它(应格的内容来的)什么。