to ask a question; to ask questions
questioner; interrogator; interpellator
awkward (difficult) question
written inquiry; written enquiry
written question; questionnaire
asking a question back (e.g. to an interviewer)
question time (e.g. in parliament, diet, etc.); question period; time allowed for questions
frequently asked questions; FAQ
establishing the identity of a defendant
follow-up question; related question; interpellation on related matters
getting advance notice of planned Diet questions
frequently asked questions; FAQ
general interpellation (in the Diet)