来自蒋勇敏的问题
Mybortherplaysping-pong()well.A.goodB.oftenC.reallyD.much
Mybortherplaysping-pong()well.A.goodB.oftenC.reallyD.much


Mybortherplaysping-pong()well.A.goodB.oftenC.reallyD.much
Mybortherplaysping-pong()well.A.goodB.oftenC.reallyD.much
选C