7.　　　　　　　 a set of reasons that sb.uses to show that sth.is true or correct  8.　　　　　　　　　　 working for yourself and not employed by a company,etc.  9.　　　　　　 to say or think that sb.or sth.is responsible for sth.bad  10.　　　　　　 an act of trying to do sth.,especially sth.difficult,often with no success 

argument　 self-employed　 blame　 attempt