I can't send these letters without any stamps / stamp on it

I can't send these letters without any stamps / stamp on it DAvid ,I can not send these letters without any s____ on. That I can`t go on any longer without you. If there are any letters for me,can you send them on to this You can't get any job without i------- ahead You can send all the letters to me and I will distribute it i can't take it any more I( )the blackboard,but I can't( )any words on it.填什么?A.look I can make words with these letters. I can't without I can't get on the bus because there is _____on it.A.no any i can't find the stamp.i must have put it in ( )