Theory:

     “Gee,” said Tommy, “what a waste. When you’re through with the book, you just 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”
Explanation:
 
Tommy did not like the printed book. He said that it was a waste because he thought that whenever you complete reading a book, you have to throw it away. You cannot have a variety of stories written in the same book. He thought that the Computer screen was very good because the same screen shows him many books and still he could read many more like millions on it. He need not have to throw that screen away once he had read a particular story.
 
Margie also consented with Tommy's opinion. Margie was \(11\) years old, and she has not read many books unlike Tommy had because Tommy was older to Margie, he was \(13\) years old.
 
Where had he found the book with the print, Margie asked Tommy.
 
Tommy said that he found the printed book on the roof of his house. He was so busy reading the book that he did not even bother to look from the book. Margie asked what the book was about?
 
Tommy said that the book was completely about the school.
 
Meanings of difficult words:
 
Numbers
Word
Meaning
1.
AtticA space just below the roof, used as a storeroom.
Reference:
 
State Council of Educational Research and Training (2018). Term-1 English Standard-9. The fun they had - Isaac Asimov (pp. 150-153). Published by the Tamil Nadu Textbook and Educational Services Corporation.