E-commerce Americans are buying more products and services than ever before through the Internet. Online sales now ____1_____ as much as one-tenth of all retail sales in the United States. Lynne Shaner used the Internet to buy everything she needed for her ___2_____ and holiday gifts. "I find that, by being able to go online and choose the things that I need to choose, and have them ____3_____ to me right at my doorstep, I ____4_____ all the driving, all the crowds, all the noise of that, and I usually get a better _____5_____ ." There are lots of people like her. Fifty-seven percent of Americans have bought something _____6______ . Store owners worry that this growing ____7_____ of online sales will hurt their business. Cornell University _____8_____ professor Ed McLaughlin says they should be worried. He spoke to VOA by Skype. Professor McLaughlin says traditional stores can keep their customers by selling goods like clothing, which buyers may want to see and try on before _____9______ . He says the stores could also offer things that are difficult to ____10______ .