questioning

You've got some other reason, don't you? Come on, I've hit the nail on the head, haven't I?

You lost the book — or rather, left it somewhere — are you sure?

Which one do you think she chose?

I wonder where on earth she's gone.

Where on earth has she gone?

Where on earth did she go?

I wonder where she studied English conversation.

I'm wrong, aren't I?

She asked a very good question.

Where did she go?

Where did she buy the book?