1. this is a fake (1)这是假的。it indicates something is fake. (2)这是假货。or 这是仿冒品。it usually uses when you purchase merchandises which are fake. 货 means cargos or merchandises here. 2. fake money (1)假钱。钱 including coins and paper money. (2)假钞。or 伪钞。钞 only means paper money. 3. fake paper (1)假报告。If paper means reports. (2)假文件。If paper means documents. (3)We know paper can represent to many different paper contents, it relies on what kind of paper work you mean. 4. Do you mean if you receive a fake paper, how would you do and reply? Oh... it sounds so bad, I hope that didn't happen on you. :( I think it relies on the importance of the paper and the occasion and who is your opposite party, so that you can decide what to do and how to react. Basically, don't be mad, I would like to make sure the reason why first, "为什么给我假文件? (Why do you provide a fake paper?)"

Usually, when you have done something well, Chinese may say 辛苦你了, which is a way to show gratitude. Or if you want to underline the fact that your "performance" was really good, then Chonese may say 你真棒, meaning "well done/you are great"

this is a fake: 这是假的。 fake money: 假钱 fake: 假的 Sorry, I still don't know what do you mean of "paper" and "a good job" here. Hope someone could give help.