He made (_) great progress (_) his parents were very happy

问题描述:

He made (_) great progress (_) his parents were very happy
so that
such that
为什么

He made (_) great progress (_) his parents were very happy.
选择such that,因为great progress的中心词为progress,符合such+形容词+名词结构,所以选择such that,整句话的意思为他取得如此大的进步,他的父母很开心.