English
Xiao Ming is in the classroom after school. He sees a big red backpack on the desk next to him. He does not know whose it is. "Whose backpack is this?" he asks his friend. "Is this yours?" His friend looks at it and says, "No, that is not mine."
Xiao Ming walks around the room. He sees books and pencil cases on the desks. He asks his teacher, "Are these your things?" His teacher smiles and says, "These books are mine, but that red backpack is not mine."
Just then, a girl runs into the classroom. "I am so sorry! That is my backpack!" she says. Xiao Ming hands it to her and says, "Here you go. This is yours." He feels happy to help.