Student or Learner
I know this is wrong(lamentably): I am eager to your replying.
What I would like to know is how wrong is it? How much would that mistake cost in a 150 word and 50 points out of 100 composition?
I am eager for something >> I am eager for your reply
I am eager to receive/hear something>> I am eager to hear from you; I am eager to receive your reply