He was surprised at his own knowledge of the subject.

"I am quite surprised at your knowledge of current events."

She understood, and her heart sank even further at the knowledge.

How if they take fright at her too much knowledge?

His eyes narrowed a fraction, perhaps in surprise at her knowledge.

They placed it at 7,000 in early 1977 and were far from happy at the knowledge.

"I shall be glad to hear, sir, how you have arrived at the knowledge of my name."

I feel like I have the physical ability to achieve at that level, and the knowledge.

Caroline was initially surprised at his knowledge of the subject, then realized that she shouldn't be.

I was kinder surprised at his knowledge of the Bible.