( )Who must be sent ____ the accident?

问题描述:

( )Who must be sent ____ the accident?
A.for;for B.to;for
C.for D.to

正确答案应为A.
如果按照汉语的语序来理解这个句子就应该是这样的:
we must send for who(m) for the accident.
题目上是将以上的句子改成为被动语态,主语省略掉了,所以就剩下题目中的成分
Who must be sent for (by us) for the accident?