We try to keep it pretty basic and simple - most things can fall into "Just do as I ask", such as taking shoes off when we come in the house, dirty clothes go into the hamper, clean underpants every day, etc., but sometimes DD just decides to argue and talk back to me over it and I'm like, really? I tell you this stuff every day, why are you deciding to have a problem with it right now and give me a hard time?
We have a zero-tolerance policy for whining, being sassy or using a disrespectful tone of voice, and also pestering/badgering for something we've already said no to. Then it's just time to go upstairs and spend some time in our room alone until we decide to be nice again.
Oh, and "Please pay attention" and "please focus!" - she gets distracted quite easily and when we are in a hurry to get ready to go to school or wherever, it's all we can do to keep her on task!