excited her parents most was that he was admitted to his dream college.A. ThatB. WhatC. W

问题补充：

excited her parents most was that he was admitted to his dream college.

A. That

B. What

C. Which

D. It

答案：

A. That

(答案→)B. What

C. Which

D. It

解析：考查主语从句。本题中的what引导的是主语从句what excited her parents most.连接代词what在句中作为主语。句意：最让他的父母兴奋的事情是他被梦想的大学录取了。It不能引导主语从句，that在主语从句中不能充当任何成分，只起引导作用。Which指特定范围之内的某一个。故B正确。