Asking about thoughts/feelings :
- How do you feel about it?
- What are you thinking about?
- You have something on your mind?
- What are you looking so serious about?
- Is something bothering you?
- Is there anything you want to talk about?
- Want to talk about it?
- Are you O.K?
- Are you worried about something?
Expressing wonder :
- I wonder at her rudeness
- I wonder how he can come here after what happened
- I really wonder if he loves somebody younger
- I'm just wondering if she knows how much I love her
- I wonder who she is
- I was just wondering how to do it
- I don't wonder after the treatment she had
Source : Look Ahead
