Questions, Statements or Mix in a Wizard

I'm creating a wizard for a flow to apply to a job, and this consists of about 10 screens. So, my question is, on each screen, which is the best UX?

• Phrase every heading as a question (for instance, "How long have you had a driver's license?"
• Phrase every heading as a statement (for instance, "Your driver's licence experience"
• Mix and match whenever you feel like it, ie it doesn't matter.

In my world it seems simpler and less cognitive load to be consistent in the phrasing so you have to think less, and a question (even though it results in more text) seems clearer to answer than a statement.

But I'd love inputs and studies on this.