Please change to passive voice)) 1)we can do nothing to help him. 2)have you sent for the flowers? 3)he will give me the answer next week. 4)they are looking after the baby now. 5)what can they do about it? 6)we must say nothing about it at present. 7)can you hear their voices from afar? 8)they published one of his books last year. 9)don’t go in! they are airing the room.