Допишите хвостик разделительного вопроса: they must stay at they had to stay at home, they had to do the ecsercise again, they had to see the doctor, they had a nice garden, she could scate well, she was busy

They must stay at home, mustn't they?
They had to stay at home, didn't they?
They had to do the exercise again, didn't they?
They had to see the doctor, didn't they?
They had a nice garden, didn't they?
She could skate well, couldn't she?
She was busy, wasn't she?