The old town has narrow streets and small houses_____are built close to each other.
I have reached a point in my life_____I am supposed to make decisions of my own.
为什么只能是that?which不行吗?
追答我刚没看题。。that和which都可以的。。我刚随便说的- -因为定语从句只要不是非限制性的,用which的情况基本上都可以用that