I am confused with the pronoun "it" inside the post. Thank you.

Hello,

I know the following article is a little bit long. It is the teching material from the assigned textbook. It has taken me a lot of time to figure out the meaning of the pronoun "it" in the words in bold. I would apprectiate it if you could you tell me what these "it" refer to?



Reading science fiction is a fascinating pastime. Isaac Asimov (1920-1992) was one of ’s busiest writers. In addition to science fiction he wrote many nonfiction works about science. Asimov studied to be a scientist and his science fiction is based on facts.

Margie even wrote about it that night in her diary. On the page headed May 17, she wrote, “Today Tommy found a real book!.

It was a very old book. Margie’s grandfather once said that when he was a little boy, his grandfather told him that there was a time when all stories were printed on paper.

They turned the pages, which were yellow an crinkly and it was awfully funny to read words that stood still instead of moving the way they were supposed to on a screen, And you know. And then, when they turned back to the page before, it had the same words on it that it had had when they read it the first time. “What ‘s it about?” “school.”



Thank you for your time.