Are you a pupil? Yes, I am.
Is your mother an English teacher? No, she isn't.
Is your friend and actress? No, she isn't.
Is Leonardo di Caprio an actor? Yes, he is.
Is Simona Halep a tennis player? Yes, she is.
Are there a lot of people outside? Yes, there are.
Is the book on the desk? No, it isn't.
Are the boys at the door? Yes, they are.
Is the felt-tip pen in the pencil-box? No, it isn't.
Is the blackboard in front of the classroom? Yes, it is.