made our school proud in was more than 40% of the students had been admitted to key

问题补充：

made our school proud in was more than 40% of the students had been admitted to key universities.

A. What ; because

B. That; what

C. What ; that

D. That ; because

答案：

A. What ; because

B. That; what

(答案→)C. What ; that

D. That ; because

解析：考察名词性从句。What引导主语从句what made our school proud in ，并在句中作主语。That引导表语从句，that more than 40% of the students had been admitted to key universities.这个表语从句很完整，that只起引导作用，不充当任何成分。结合句意可知C正确。句意：让我们学校自豪的是超过百分之40的学生被重点大学录取。