网址：http://m.1010jiajiao.com/timu3_id_2668240[举报]
---Do you have a ping-pong ball? ---
A．Yes，I do B．Yes，I don't． C．Yes，I am． ．
---Do you have a ping-pong ball? --- A．Yes，I do B．Yes，I don’t． C．Yes，I am． ．