Good things come in threes. Case in point: watch, bag, DVD. In this case: keys, wallet, phone. All good things, and good things to remember to bring with you when you leave the house. In this podcast, learn how to do a Mandarin Chinese mental checklist before leaving the house, to make sure that you don't end up locked out, penniless and searching in vain for a germy public phone on a borrowed dime.