You may in fact try to use the intranet of the school to contact the parents of you son's classmates to see if they are willing to exchange the telephone no. with you. This may be more effective. Or ask you son to ask some of close friends for the phone no.
thanks toffeeli. I've tried to do so (via intranet) yesterday but no response yet. (很怕有少少唐突). I'll wait. Thanks for your suggestion. This one month I don't have chance to know 1B parents....
Actually, I have same experience as you. Now I learnt that I should trust my son. When he said that the teacher had not returned the workbook etc, it happened to be true.
Actually, I have same experience as you. Now I learnt that I should trust my son. When he said that the teacher had not returned the workbook etc, it happened to be true.