There are many kinds of ants in America. One kind is very s___1___. People are afraid of it, and animals are afraid of it, too. These ants move in large g____2___. They eat p____3____, animals and w____4____ houses. Sometimes even people are k____5____ by them. When the ants come n___6____, people have to l____7____ their homes. But people are sometimes glad a____8____ the ants pass t_____9_____, because all the insects (昆虫) or snakes are e____10_____ by them.