He is going to work in the position____needs him most. A that B where C it Dwhat (应说明原因）
问题描述：
He is going to work in the position____needs him most. A that B where C it Dwhat (应说明原因）
答
选A,that needs him most 是定语从句,修饰position.该定语从句中缺少主语,所以用that为什么不用where？where 在定语从句中不做成分