Lileiwithhisgrandpaw的精選

問題詳情： 單項填空；從A、B、C、D四個選項中，選出可以填入空白處的最佳選項。Lileiwithhisgrandpawentfor      walkafterplaying      chessfortwohours.A.a;the          B.不填;the  C.the;...