Does Mary have a ping-pong ball?

玛丽有乒乓球吗？

同一单元的其他句子

• Do you have a soccer ball?你有足球吗？
• Yes, I have a soccer ball.是的，我有一个足球。
• No, I don't have a soccer ball.不，我没有足球。
• Does he have a basketball?他有篮球吗？
• She has a volleyball and a tennis ball.她有一个排球和一个网球。