Помогите пожалуйста с 3 заданием срочно!!!!!!!!!!!!!!!!! пассивный залог переделать в активный

1.They are building the apartment houses. 2.Tolstoy wrote "Anna Karenina". 3.They have sent the doctor for. 4.People play tennis all over the world. 5.They will wallpaper the room tomorrow. 6.Everyone always listen to him with great interest. 7.Everyone has spoken about this student recently. 8.My parents will make the repairs as soon as they come back from vacation. 9.They answered to a lot of letters