问题
选择题
While playing on the playground, ____.
A．a stone hurt me
B．a stone was hurt me
C．my leg was hurt by a stone
D．I was hurt by a stone
答案
答案：D
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。
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