单选题While playing on the&nbsp

问题补充：

单选题Whileplayingontheplayground,____.A.a stone hurt meB.a stone was hurt meC.my leg was hurt by a stoneD.I was hurt by a stone

答案：

D解析前一句用现在分词相当于相应的状语从句，后面的主句要和前一句的主语保持一致，所以选D。