"I have evidence" should be accepted!
Was accepted for me!
"I have proof" is correct, not "I have proofs". Proof is uncountable.
Evidence is uncountable. You can't have evidences
Why not proof?
I have ample evidence that this is not a good language course.
I ate so much bằng chứng over tết.
I've got evidence should be accepted as well. Quite a pain that British usage isn't included in the answers.