6)
They aren't playing the piano.
I'am not talking
He isn't writing
She isn't dancing
We aren't jumping
She isn't walking
We aren't watching TV
You aren't driving a car
I am not reading
He isn't making a sandcastle
They aren't painting a picture
You aren't singing a song

7)
Are they playing the piano ?
Are you talking?
Is he writing ?
Is she dancing ?
Are we jumping ?
Is she walking?
Are we watching TV?
Are you driving a car?
Are you reading?
Is he making a sandcastle ?
Are they painting a picture?
Are you singing a song?