a question

sorry! (in apology, more formal than ごめんなさい (gomennasai)) / excuse me! (attempting to get someone's attention) / thank you! (in the case of someone having done something for you)

sorry for doing; apologize for doing

to ask a question

I have a question

(less polite) frequently asked questions; FAQ

barrage of questions, torment someone with inquiries

public questioning of a suspicious person by a police officer

a police officer, to publicly question a suspicious person

frequently asked questions; FAQ