Задать вопросы на языке 1 who , 1 общ , 6 специальных , 1 c хвостиком. со своими другом эти мальчики уже сделали много уроков в их комнате .

Who have done a lot of lessons in the room?
have they done a lot of lessons in their room?
with whom the boys have done a lot of lessons?
With his friend, these boys have done a lot of lessons in their room, haven't they?