Do you have a baseball?
Yes,I do./ No,I don't.I have a volleyball.
Do you have aping-pong bat?
Yes,I do./ No,I don't .I have a ping-gong ball.
Does she have a tennis ball?
Yes,she does./ No,she doesn’t.She has a baseball.
Does he have a soccer ball?
Yes,he does./ No,he doesn't.He has two ping-pong bats.
Do they have a basketball?
Yes,they do./ No,they don’t.They have a volleyball.
don't = do not doesn’t = does not