_____your brother ____a letter to?my father

问题描述:

_____your brother ____a letter to?my father
33.____ your brother _____ a letter to My father.
A.Who… wrote B.What…wrote
C.Who did…write D.What did… write
为什么选C不选A,请说明得详细点

选C,你哥哥给谁写了信?——我爸爸
这里是简单过去时的疑问句,特殊疑问词+did+主语+动词原形+...A少了助动词did,且动词没有用原形