技校高铁乘务专业:Whose jacket that is?是什么意思?

Whose jacket that is?是什么意思? 选whose还是that? whose caris that?的中文意思? Whose skirt is this的同义句？？？？？？？？？？？ that is that 何解? that is a pen what is that? Whose car is it ? It belongs to his. It is like that that way "I think that that that that that girl omitted is not that important."