Why would he speak to sleeping people?
Student or Learner
Today, he woke up very early because he wanna go to park .
He found that daddy and mummy were still sleep soundly then he said, "I let you both sleep awhile, i reading my book first."
"I let you both sleep awhile, I reading my book first."
"I let you both sleep awhile, I am going to read my book first."
Is the second sentence sound more correctly?
I might say something like:
"I will let you both sleep a little while longer. I am going to do some reading until you wake up."
P.S. I have made a few suggested changes to your original post.
In post #3, I would suggest something like: "Maybe the kid knew that his parents were pretending to be asleep."