A、They are places for people to exchange their goods. B、They are places for residents to heap the useless things. C、They are sal

It seems like almost everyone buys or sells goods at yard sales in the United States. People place used personal or household goods for sale outside their homes (30) .
    The LT. S. one Twenty-Seven Corridor Sale is known as the World’s Longest Yardsale. It began in 1987. The event’s headquarters is in Jamestown, Tennessee. A former local official, Mike Walker, came up with the idea (31) . He thought it would bring people to the area and show them that small country roads have a lot to offer. Others agreed. They wanted people to consider traveling on these roads instead of the popular interstate system.
    Every year, the four-day sale begins on the first Thursday in August. So August 7th of this year marks the opening of the twenty-first World’s Longest Yardsale. The event now crosses five states--Ohio, Kentucky, Tennessee, Georgia, and Alabama.
    Tens of thousands of sellers take part. Some people who live along or near Route one Twenty-seven simply place their goods for sale in front of their house. Others use nearby public spaces, like parks. People sell everything and anything at the sale: furniture, clothing, toys, books and music. You can also find sporting goods, farm equipment, tools and art. And, lots of other things (32) . Tens of thousands of people from across the country drive along the road in search of interesting things to buy. Route one Twenty-Seven becomes crowded with vehicles.