1.what have we said_____her so sad

题目

1.what have we said_____her so sad
a.makes b.to make c.made d.had made
为什么呢?我选择C.

答案

如果_____前面的顺序变成：what we have said 就选C了.
这句话应该是个问句,变成陈述句就是：
We have said ______ to make her so sad.