Are you working at school?
Yes, I am.
Are you writing in English?
No, I am not.
Are your friends having a music lesson?
Yes, they are.
Are your friends playing football?
No, they aren’t.
Is your teacher writing on the board?
No, she isn`t.
Is it raining?
Yes, it is.
Is he doing karate?
Yes, he is.
Is it skating?
No, it isn`t.
Are they talking?
Yes, they are.
Are they singing?
No, they aren`t.
