If possible, I'd like a boy to read these sentences.
This is a pen.
This is my cap.
That is your book.
Is this a your cap?
Is that a pen?
Is this my book?
Is that your pen?
Is that my chair?
Is that your cap?
Yes, it is.
No, it is not.
No, it's not.
No, it isn't.
What is this?
What's this?