Что есть и чего нет в моей комнате в единственном числе составить по 2 предложения. is there yes, there is no, there isn’t

Is there a chair in my room? Yes, there is.
Is there a table in my room? Yes, there is.
Is there a flower in my room? No, there isn't.
Is there a car in my room? No, there isn't.