How does the boy respond when Mangan's sister asks him if he's going to Araby?
A should most likely respond to the boy in question. This will show the male that you are taking notice of him senpai~
You answer his question or not as you wish.
He chased him away
Yes, the wolf eats the boy when the townsfolk fail to respond to his cries for help, because he falsely raised the alarm many times before.
He is either not interested, too busy, or too shy to respond.
The boy responds eagerly that he is indeed going to Araby, hoping to find a gift for Mangan's sister at the bazaar.
I am not sure what you mean by "respond properly". Expectations are from the person who is asking and if he thinks she was rude or something else he should just walk away. She is not worth his time.
There could be various reasons why a boy might not respond when a girl says hi. He might be shy, nervous, distracted, or simply not interested. It's important to remember that everyone is different and may respond in their own way.
Ralph thinks the boy is not Bill because the boy is smaller, younger, and more terrified than Bill would likely be given the situation they are in. Ralph also notices that the boy does not respond when he calls out for Bill, indicating that it might not be him.
You cannot know for certainYou cannot know unless you were to ask them. Even then they could be lying. Ask the boy and the girl that you believe the boy is going out with. If they both respond yes. Then chances are good that they are going out.
You can't really get this boy to like you if he doesn't want to. If you have tried to talk to him and he doesn't respond I would leave him alone and move on. There's always someone better to find.