Is his birthday in April?
No,it isn't in April. It is in May.
Are you English?
No,I aren't ( ain't).I am Greek.
Is he a good football player?
No,he isn't.He is good at cricket.
Are you in the football team?
No,we aren't.We are in the hockey team.
Are they your sisters?
No,they aren't my sisters .They are my friends.