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

问题补充：

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

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： 略