我认识那个和你说话的女孩。

I know the girl ___that you were talking to.

他们喜欢他们吃午饭的那家餐厅。

They liked the restaurant ___that they ate lunch at.

我想卖掉我那把50年旧的扶手椅。

I want to sell my armchair ___that is 50 years old.