Is he throwing?
Yes, he is
Is he jumping?
Yes, he is
Is she singing?
Yes, she is.
Is he riding a bike?
Yes, he is.
Is he riding a horse?
No, he isn't.
Is he watching tv?
No, he isn't.
Is he doing his homework?
No, he isn't
Is she playing football?
Yes, she is.
Is he catching?
Yes, he is
Is she jumping?
No, she isn't.
Is she dancing?
No, she isn't