помогите пожалуйста нужно заменить время глагола в основном предложении на Past

Помогите пожалуйста необходимо поменять время глагола в главном предложении на Past Indefinite и сделать соответствующие конфигурации в придаточном предложении: 1. He says they have already done it. 2, I know they have been there several times. 3. We think that we shall not be there on Sunday.4. George says they may ask the clerk about it. 5. He says you have given them some money.6. They promise they will go to the cinema after dinner.7. Ann says she may be late for dinner.8. He thinks that it will take us much time to do it.9. She wants to know whether I can speak any foreign languages. 10. She asks me how old I am.