—It's her key.

—It is my mother's T-shirt.

—It's Jenny's skirt.

Sarah: We're going on a trip. What do you want to wear?

Mike: I want to wear my pants and sweater. What about you? 

Sarah: I want to wear my skirt and dress. And I need a hat.

Mike: Oh! It looks nice. I can take my shirt and shoes.

Sarah: I will take my jacket, too.           

例如：Whose skirt is it?  It's Sarah's skirt.

根据划线单词提问。