this is the classroom ____ i used to study before

this is the classroom ____ i used to study before This is the classroom ___ I used to study in ten years ago.( This is the school where I used to study.是不是非限定性定语从句 I like the classroom where I used to study I like the classr The money is used to ____ poor children study in school. 1.this is the factory ----------- i used to work This is the school where I used to This is the house ______ I used to live. This is the place ( ) I used to visit填什么? Is this school where you used to study?是什么从句? This is a house .I used to live in the house = This is the h this is the place that i used to visit ten years ago和this is