made the school proud was more than 90% of the students had been admitted to key universi

问题补充：

made the school proud was more than 90% of the students had

been admitted to key universities.

A. What; because

B. What; that

C. That; what

D. That; because

答案：

A. What; because

(答案→)B. What; that

C. That; what

D. That; because

解析：考查主语从句和表语从句。What引导主语从句what made our school proud in ，并在从句作主语。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B正确。句意：让我们学校自豪的是超过百分之90的学生被重点大学录取。