Is he sleeping?
Yes, he is.
Is he climbing?
Yes, he is.
Is he climbing?
No, he isn't.
Is he playing video games?
yes, he is.
Is he swimming?
Yes, he is.
Is she singing?
Yes, she is.
Is he reading?
No, he isn't
Is she playing football?
No, she isn't.
Is she dancing?
No, she isn't.
Is she dancing?
Yes, she is.
Is she swimming?
No, she isn't.
Is she reading?
Yes, she is.
Is he riding a bike?
Yes, he is.