Always like this.
总是如此。
Keep it.
留着吧。
Hey, I'm going grocery shopping. You want some milk? One quart or two? It's two, right?
嘿，我要去杂货店买点东西。要我帮你买点牛奶吗？一夸脱还是两夸脱？两夸脱，对吧？