Answer:
1. I don’t think I will be able to come.
2. He will not come unless he is invited.
3. You should be punctual.
4. Should I help you?
5. Would you mind moving a bit?
6. He said that I could visit his home whenever I wanted.
7. If you should see her, give her my love.
8. Would you like another cup of coffee?
9. I wish you would not drive so fast.
10. I wish you would stop lying. (= Why don’t you stop lying?)