Choose the correct answer: fewer or less?

1. Water has fewer less calories than milk has.
2. The doctor advised the kid to eat fewer less sweets and dink fewer less soda to lose weight.
3. There are fewer less cars on the roads in this small town.
4. He did fewer less exercises than he should have than.
5. She has much fewer less patience than her husband.
6. I have fewer less money to spend on buying clothes than my sister has.
7. He wants to make fewer less business trips as he has become seriously ill.
8. She has fewer less time to finish the job.
9. The students have fewer less days to finish the project.