Summary---Whosebookisthis?---Itmust/could/might/can’tbeCarla’s.---Itmust/could/might/can’tbelongtoCarla.*好好学习天天向上Useyourmind,maketheinferencescorrectly!学会动脑,推理思考!*好好学习天天向上Homework晚上八点多,突然听到有敲门声,请你根据下面的词组提示,写几句话来猜测是谁在敲门,并写出理由。参考词汇:can’tbe