Down and hurt his leg.A. fell the boyB. fell heC. did he fallD. did the boy fell

问题补充：

Down and hurt his leg.

A. fell the boy

B. fell he

C. did he fall

D. did the boy fell

答案：

(答案→)A. fell the boy

B. fell he

C. did he fall

D. did the boy fell

解析：句意：这个小男孩摔倒了，腿受伤了。副词down放在句首，又因为做主语的是名词，所以句子用完全倒装，选项C是部分倒装，选项D错误，fell应为原形；当主语是代词时不能用完全倒装，故选A。