What is he doing?
He is eating a SANDWICH
Is he wearing a HAT?
No, he isn't
Yes, he is
What is she doing?
She is taking a PHOTO
What is he doing?
He is wearing a HAT
Is she taking a PHOTO?
No, she isn't
Yes, she is
Is she eating a SANDWICH?
Yes, she is
No, she isn't
What is she doing?
She is writing in her BOOK
Is he writing in her BOOK?
Yes, he is
No, he isn't