Should I tell the truth?

[TommyinKY]

As much as I feel that people should be honest, I think that you should take this and run with it. By sharing those answers he has obviously seen something in you that he feels would be a benefit in the field you have chosen to pursue. If you feel guilty for using the answers then I suggest that you pour over your materials anyway make it a goal to really understand them even though you know the answers. Live up to the faith that he has in you and let it be an incentive to become better.