If he his father about this I think his father him.A. tell; help B. tells; will help C.

问题补充：

If he his father about this, I think his father him.

A. tell; help B. tells; will help C. will tell; helps

答案：

解析：句意：如果他告诉他的父亲，我想他父亲会帮助他。根据句意可知主句该用一般将来时态。根据英语表达习惯主句用了一般将来时，条件状语从句该用一般现在时。所以选B。