Definition: used to refer to something or someone that has already been talked about or seen Level: A1
那支蓝色的钢笔在哪里？
Where is ___that blue pen?
我住在那个有红门的房子里。
I live in ___that house with the red door.
我们去年夏天参观了那座美丽的城堡。
We visited ___that beautiful castle last summer.
