Choose much or many

1. Did you buy (much/many) sugar?
2. There aren't [much|many] stadiums in this city.
3. I haven't got [much|many] tea in my cup. I need to stop and get some.
4. Were there [much|many] people in the shop?
5. Did [much|many] students pass the exam?
6. James hasn't got [much|many] energy to study.
7. I wasn't hungry, so I didn't eat [much|many].
8. We don't know where James lives these days. We haven't seen him for [much|many] years.