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 would come if you invited him.
6. If I had time, I would help you.
7. Peter would come if you wanted him to.
9. He would know my address if someone gave it him
10. If you wrote more often, you would receive more letters.
11. I would buy it by myself if I had money.
12.I should break a promise if I answered your question.