Which pronouns in this excerpt from Isaac Asimov’s “The Fun They Had” show that it is written in the third-person point of view?
"Gee," said Tommy, "what a waste. When you're through with the book, youjust throw it away, I guess. Our television screen must have had a million books on it and it's good for plenty more. I wouldn't throw it away."

"Same with mine," said Margie. She was eleven and hadn't seen as many telebooks as Tommy had. He was thirteen. She said, "Where did you find it?"

"In my house." He pointed without looking, because he was busy reading. "In the attic." "What's it about?" "School."

Margie was scornful. "School? What's there to write about school? I hate school."