Поставьте глагол в основном предложении в Past Indefinite и сделайте нужные

Поставьте глагол в главном предложении в Past Indefinite и сделайте нужные преображения в придаточном предложении. 1. I think that she is at home. 2. We know that she is ill. 3. I hope that they knew about it. 4. I think that they were busy. 5. We hope that they will help us to do this work. 6. We think that we shall have our holidays in January.