Jim and Bill play with a frisby. Jim throws the frisby to Bill. Bill throws the frisby to Jim and Jim catches it. They don't see Li Lei come over. Jim throws the frisby. It flies to Li Lei. Jim is sorry. He asks Li Lei,' Are you OK?' Li Lei says, 'I'm fine. Please don't worry!' Li Lei plays with them, too. But Li Lei can't throw the frisby. He throws it up and down. Jim teaches him to throw it. Li Lei can throw it now. They all throw the frisby there. It's time to ______ now.