Give three pieces of evidence why we know that Willie has been ill-treated?

" One of his socks slid halfway down his leg, revealing a large multicolored bruise on his shin and a swollen red
sore beside."

"He noticed another bruise on the boy's thigh, but said nothing."

"I must be good," and he rubbed a sore spot on his arm. He was such a bad boy. Mum said she was kinder to him than most mothers. She only gave him soft beatings."

"Tom came towards him, took the branch firmly from his hand and lifted it up. Willie automatically flung his arm across his face and gave a cry, but the blow he was expecting never came."