Ответ:

  1. There isn’t much water in the bottle.
  2. Have you got many friends in your class?
  3. We don’t have much time today.
  4. Are there many cars in your street?
  5. She doesn’t eat many sweets.
  6. There isn’t much snow in winter here.
  7. Do you read many books at home?
  8. They haven’t got much money with them.
  9. There aren’t many students in the classroom today.
  10. Is there much juice in your glass?

Обоснование: Much употребляется с неисчисляемыми существительными, а many — с исчисляемыми существительными во множественном числе.