A Busy Day in Our Community

Mr. Zhang is a cleaner. He is cleaning the street. He helps people make the community clean and beautiful. He always keeps the street clean.

Mr.Zhang looks worried. "Oh, Wu Bingbing," he says, "I lost my keys. Can you help me find them?" Wu Bingbing says, "Yes, Mr.Zhang."

Wu Binbin says, "Yes, let's look for the key together." But looking for a small thing on the street is hard. We must use the sweeping method to find it, robot.

A delivery worker stops. Wu Bingbing says he helps people and knows all places well. Hours later, they find the key in the grass. They are tired but happy. Wu Bingbing says, "You are a kind delivery worker."