— I told you that he would come to see you.— Actually I had little doubt it was true.A. w

问题补充：

— I told you that he would come to see you.

— Actually I had little doubt it was true.A. whetherB. thatC. sinceD. if

答案：

little doubt 表示“不怀疑”，要用that来引导宾语从句。而whether, if为同类项，表示“是否”，经常用于肯定句中。