This is a book

This isn't a book. Is this a book? What is it? That is a pencil. That is not a pencil. Is that a pencil? What is that? These are books. These are not books. Are these books? What are these? Those are pencils. Those are not pencils. Are those pencils? What are those? What is your adress? What's your name? What color is this? What size is that? What day is today? Milk is good to drink. Milk is good for you to drink. This yard is full of children. What is this in the picture? One is strong. The other is weak. That's a good idea. That's very kind of you. What he said is something. All you have to do is add the letters. This is my girl going into the door.