Rewrite these sentences using subjunctive mood.
1. They'll miss the train if they don't hurry.
2. If it rains again, we will have to stay at home.
3. I will do my best if you ask for help/
4. Peter will never say a world if he doesn't want to.
5. If they come to the birthday party, Ted will be happy.
6. You will improve your English if you practice more.
7. If they get hungry, they'll have lunch at once