the most exciting thing for him was ___he finally succeeded in ___seem to be a difficult exam to hi
问题描述：
the most exciting thing for him was ___he finally succeeded in ___seem to be a difficult exam to hi
少个 m
空中为什么填 that what
第二个空是what
答
that是宾语从句的引导词,后面的宾语从句中不缺成分,所以只能用that引导.
what 引导的是从句中的从句,做介词in的宾语从句.
因为从句中缺少主语 ,所以要用what引导.
句意：最令他激动的事情是,他最终通过了对他来说很难的一门考试.