Question

how can you say that the boys worked quite hard in the chapter two gentlemen of Verona

Answer 1

Heya,
It is because they did every work which help them to earn money like hawking newspapers, polishing shoes, selling wild strawberries etc.
And they saved all the money for their sister's hospital expenses keeping their interests aside....

Hope it helps.....

Answer 2

Two Gentlemen of Verona is a story about two brothers Jacopo and Nicola. A.J Cronin who is the author meets them in the town of Verona. At a young age, the brothers faced many hardships of life such as their father became a victim of early war, their mother died at the early age of their life and so forth. As they got homeless they suffered starvation and were the only family to their sister who was suffering from tuberculosis. In order to meet their sister's medical expenses at a very early age, they started working as a fruit seller, shined shoes, hawked newspapers and also as tourist guides. They never lost their hope and work harder than they were referred to as 'Gentlemen.'