A、The speaker could run faster than Amery. B、The speaker liked playing on boys of all sizes. C、Amery was a student in Grade Four

I first went to Harrow in the summer term. The school had the biggest swimming pool I had ever seen. It was a good joke to come up behind a naked boy, and push him into the pool. I made quite a habit of this with boys of my own size or less.
One day I saw a boy wrapped in a towel on the side of the pool. He was no bigger than I was, so I thought him a fair game. Coming secretly behind, I pushed him in, holding on to his towel so that it would not get wet. I was surprised to see an angry face come out from the water, and a being of great strength making its way by face strokes to the shore. I fled, but in vain. He overtook me, seized me violently, and threw me into the deepest part of the pool. I soon climbed out on the other side, and found myself surrounded by a crowd of younger boys. “Do you know what you have done?” they said. “It’s Amery; he is in Grade Six. He is champion at gym; he has got his football honor.”
I was frightened and felt ashamed. How could I tell his position when he was wrapped in a bath towel and so small. He didn’t seem pleased at all, so I added in a most brilliant word, “My father, who is a great man, is also small.” At this he laughed, and after some general words about my rude behavior and how I had better be careful in the future, signified the incident was closed.
Questions 33 to 35 are based on the passage you have just heard.
33. Why did the speaker think Amery “a fair game”?
34. Why did the speaker feel ashamed?
35. Which is true according to the passage?