it was just in the school

网友回答

It was just in the school_where_I once studied _that_we hold a party.
本句主要考查 it is ……that……这个强调句型.
where I once studied 是定语从句,修饰the school.
整句翻译：我们正是在我曾经就读过的学校举行的聚会.
补充：第一个空要用which 的话,应 为 in which I once studied.介词in不能省.
======以下答案可供参考======
供参考答案1:
that, where
供参考答案2:
It was just in the school (where) I once studied (that) we hold a party.