1) Are they your friends?-Yes,they are
2) Is he your brother?-Yes,he is.
3)Does he ride a bike?-No,he doesn*t.
4) Do you want to play with the ball?-No,I don*t.
5) Can she roller-skate well.?-No,she can*t.
6) Does your friend want to play the piano?-Yes, he.does.