You both look rather tired." The boys reply

The narrator asks the boys," Must you work so hard? You both look rather tired." The boys reply,"We are not complaining,sir." What do you

learn about the boys from their reply? 

Answer: From their reply we can make out that the boys were highly commited and devoted towards work at such a tender age.

They had extreme patience, endurance and tolerance. They were also extremely hard-working.They were  non-complaining, rough and tough children who wanted to maintain their dignity and self-respect.