Закончите разделительный вопрос

1.They will wash the car,
2.We must lock the doors,
3.I'm correct,
4.So you bought a car,...,... Congratulations!

1. They will wash the car, won't they? 2. We must lock the doors, mustn't we? 3. I'am correct, amn't I? 4. So, you bought a car, didn't you?