John went up to his room with a bowl of ice cream to do his homework and then chat with his friends on Facebook. He had just finished his ice cream when he felt a pain in his mouth. “Oh, no, the toothache is back,” he thought. He went into the bathroom, found the ______ and took two. “Perhaps it will be better in the morning,” John said to himself. But that night the pain got worse. John couldn’t sleep. When he returned to the bathroom for the third time he met his mother.