It has been replaced by dead-bolt locks, security chains, ______ (1) alarm systems and trip wires ____ ___ __ (2) a police station or private guard firm. Many _____ (3) families have sliding glass doors on their patios, with steel bars elegantly ____ __(4) So no one can pry the doors open.It is not ______ (5), in the most pleasant of homes, to see pasted on the windows small notices ___________ (6) that the premises are under __________ (7) by this security force or that guard company.The lock is the new _______ (8) of America. Indeed, a recent public-service advertisement by a large insurance company ______ (9) not charts showing how much at risk we are, but a picture of a child's bicycle with the now-usual padlock _______ __ (10) it.