Theory:

     Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice 'without pictures or conversation?' So, she was considering in her own mind (as well as she could, for the hot day made her feel very sleepy and stupid), whether the pleasure of making a daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.
 
     The Rabbit pulled a watch out of his pocket to check the time. He shook his head, then disappeared down a rabbit's hole. "I must find out why he's in such a hurry!" cried Alice. Filled with curiosity, she ran to the rabbit's hole and peeped through the entrance. The hole dropped suddenly and Alice fell.
 
     She fell for a long time when suddenly she came upon a little three-legged table, all made of solid glass. There was nothing on it except a tiny golden key.
 
     When she looked around again, she came upon a low curtain she had not noticed before, and behind it was a little door about fifteen inches high. She tried the little golden key in the lock, and to her great delight it fitted! She opened the door and saw a beautiful garden through it, but she couldn’t reach it as she was too big.
 
     When she turned around towards the three-legged table, Alice found a green bottle that said "DRINK ME" magically appeared on it. Out of curiosity, Alice took the bottle and drunk the entire potion. Then, she began to shrink until she was no bigger than a doll.
Explanation:
 
Alice and her sister were sitting on the bank of a river and were idling. Her sister was reading a book, so Alice tried to read it, once or twice, whatever she was reading. The book did not have any pictures or dialogues. Alice did not like the book, as it did not have anything interesting. The day was blazing, together with Alice feeling very sleepy and bored. Alice thought of collecting a few daisies to make a necklace. Suddenly, she saw a White rabbit with pink eyes scurrying away.
  
The rabbit took a watch from his pocket and checked the time. He shook his head and then went into the rabbit's hole. Alice wanted to know why the rabbit was in such a hurry.
 
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White rabbit with it's watch
 
She was curious, so she followed the rabbit inside the rabbit hole. At the entrance, the pit dropped, and Alice fell inside. After a long time, Alice saw a three-legged table, made of glass. There was just a tiny golden key on it.
 
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Alice and White Rabbit
  
Alice started looking around, and she found a curtain. Behind it was a little door that was about fifteen inches high. Alice was curious, and she tried the key in that lock of the door. To her surprise, it opened, and she could see a beautiful garden through it. Alice was too big to enter the door.
 
Alice looked around on the three-legged table, and she saw a green coloured bottle on it. When she looked keenly, magically, "Drink me" appeared on it.
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Green potion

As expected, Alice took the bottle and drank it. She started shrinking, and she came to the size of a doll.
 
Meanings of difficult words:
 
Numbers
Word
Meanings
1
DaisiesA flowers with a yellow disc and white rays.
2
CuriosityA strong desire to know or learn something.
3
Peeped Look through a narrow opening.
Reference:
State Council of Educational Research and Training (2019). Term-2 English Standard-7. Alice in Wonderland -  Lewis Carroll. (pp. 103-106). Published by the Tamil Nadu Textbook and Educational Services Corporation.