For more than six million American children,coming home after school means coming to an empty house.Some deal with the situation by watching TV.Some may hide. But all of them have something in common.They spend part of each day alone.They are called latchkey children.(1)_______________________.And their bad condition has become a subject of concern.A headmaster of an elementary school said that there was a school rule against wearing jewelry.A lot of kids had chains around their necks with keys attached.He was constantly telling them to put them inside shirts.There were so many keys. Slowly, he learned they were house keys.He began talking to the children who had them.(2)_______________________.Fear is the biggest problem faced by children at home alone.Many had nightmares and were worried about their own safety.The most common way latchkey children deal with their fears is by hiding.It might be in a bathroom, under a bed or in a closet.The second is TV. They'll often play it at high volume.(3)_______________________.