When I was young， I studied at a boy school． We were all （1）b______ thirteen and eighteen． Our headmaster was an old man． He was kind， but all of us were （2）a______ of him． For example， we were playing， （3）t______ and laughing， when he came in， the classroom became quiet at once． If a boy didn't finish his homework well or carefully， he would be very angry and asked the boy to do it （4）a______． But his grandson told us that he never did things （5）l______that at home．