made Jim most excited was, I think, he had passed all the exams.
A. That, what
B. What, which
C. That, which
D. What, that
网友回答
A. That, what
B. What, which
C. That, which
(答案→)D. What, that
解析：考查名词性从句。句意：我认为使Jim最兴奋的是他通过了所有的考试。what引导主语从句，做主语。that引导表语从句，不做句子成分。所以答案选D。