Поменяйте предложения нереального условия в истинном времени на предложения мистического

Замените предложения мистического условия в истинном медли на предложения нереального условия в прошедшем времени.
1. If she tired, she could be better. 2. He would do more work if he were able. 3. I should live better if I earned more money. 4. If I knew the answer, I should tell you. 5. He wouldn't come unless you invited him. 6. We shouldn't remember it if it weren't so strange. 7. If I had time, I would help you. 8. Peter would come if you wanted him to. 10. If you wrote more often, you would receive more letters. 11. They would prefer to keep it if they could. 12. I would buy it by myself if I had money. 13. If they offered it to me for nothing, I wouldn't take it. 14. I should break a promise if I answered your question. 15. If you swore to keep a secret, I would tell you.