Решите пожалуйста! Автор сделал несколько ошибок в этом рассказе. Помогите ему

Решите пожалуйста! Автор сделал несколько ошибок в этом рассказе. Помогите ему отыскать их. Обратите внимание на формы с -thing и -body.

Steve comes back home at 5. He doesn't use his keys because there's always something at home. To-night when he comes nothing opens the door. There's nobody in. What's the matter? he thinks. Anything has happened. Steve begins knocking at the door with his fists and then listens. He hears nobody. Then he sees anybody at the door. It's the note. He reads: Nobody wants to speak to you. We'll ring you up. Steve remembers about his keys, opens the door and runs in. There's anything unusual in the room...