请根据课文中的故事内容填空。
Four blind men are under a tree. They cannot see. "This is an elephant. You can touch it with your hands, "an old man says. "And how does it feel, young men?"he asks.
The first blind man touches the elephant's tail. He says, "It's .
" The second blind man touches its ear. He says, "It's , "The third blind man touches its leg. He says, "It's . " The last blind man touches its tooth. He says, "It's . "The old man laughs. Because(因为)no one is right(正确的).