Write question sentences in to be going to (lucy / call / a taxi)? (you / sing / a song / for us) ? (you / cook /dinner)? (she / take part / in the concert)? (they/leave the house)?

Is Lucy going to call a taxi?
Are you going to sing a song for us?
Are you going to cook dinner?
Is she going to take part in the concert?
Are they going to leave the house?