1) Acts as a quizmaster 2) Acts as the interlocutor 3) Acts the quizmaster 4) Answers Trebek 5) Appeals 6) Appeals to 7) Applies 8) Attempts to find out 9) Begins a Q&A session 10) Begs 11) Bids 12) Brings something up 13) Calls for 14) Calls upon 15) Catechizes 16) Charges 17) Conducts a survey 18) Consults 1) Invites 2) Poses 3) Requests