once upon a time ,a girl and a boy were 短文改错
once upon a time ,a girl and a boy were played together and happened upon a secret laboratory,they entered and gound a mysterious machine.they pressed a button and the machine turned the boy into the size of a little rock.sad ,the girl picked up her friend and put her i her schoolbag to home was just terrible for the boy,who couldn‘t help cry .while the girl tried to get the boy out,she found it was not easy job.after much attempts,she finally found her friend.all chilren learnt the importance og keeping things in order .the next day they went back to the laboratory which an inventor managed to get the boy back to his normal size.