问题描述：
This is the house in __I used to live A.that B/ which C.where D.it
This is the house in __I used to live
A.that B/ which C.where D.it
为什么选B .
This is the house in __I used to live
A.that B/ which C.where D.it
为什么选B .
问题解答：
我来补答展开全文阅读