______ made the school proud was ______ more that 90% of the students had been admitted to key universities
A.What…becauseB.What…thatC.That…whatD.That…because在线课程B
解析：
主要测试主语从句和表语从句。分析句子结构可知：句子_{___} made the school proud 缺少主语，另外还要引导主语从句，故此只能选择what，由此先排除C、D两答案。再结合句子_{___} more that 90% of the students had been admitted to key universities结构完整不缺少成分，只需要引导词。句子意思：让我们学校自豪的是百分之九十多的学生被重点大学录取。