Question

Your reproach is not fair. I am surprised _ your having said this. a. On b. At c. Of

Answer 1

Your reproach is not fair. I am surprised b. At your having said this.

a. On

b. At

c. Of

Answer 2

Hmm, this is a bit tricky. I'd go with "at." So, "I am surprised at your having said this." How'd I do?