Playing golf with clients is one way to 'mix business with pleasure'. [=to do something enjoyable that is related to your work]
I accidentally 'mixed up' the two files. [=I put each of the files in the place where the other one should have gone]
He 'got mixed up in' a plan to destroy the government. [=he became involved in a plan to destroy the government]
(..) And, thus, the chosen warriors on the way Shoukaia to the Lord of Darkness, to defeat.. Look, a lake Since we'll have to mix around drum.. This done with the left. No, we will spend the night here. A good place for us what we hunt for dinner. If you can keep your mouth shut while (..)2011 The Dragon Warrior