@FBM,
Hi, I'm sorry We're still confused. How do we know which is the subject and the object in questions?
i.e.
1) What kinds of clothes are your sister into? (Jeans and sneakers are what she's into) vs What kinds of clothes is your sister into? (She's into jeans and sneakers).
2) What kinds of things gross your mother out? vs What kinds of things grosses your mother out?