Jack is an English boy. Now he is in Beijing. Wang Qiang is his good friend. They often play together. Today they want to climb mountains. They buy some snacks in the shop. And then they go to the mountain by car. They are so happy. But Jack falls (摔倒) and hurts his knee. Luckily, Wang Qiang has some plasters (创可贴) in his bag. He puts one on Jack’s knee. Jack is okay now.