Some nouns are uncountable. They have no plural. These are: bread, lemonade, butter, money, cheese, tea, coffee, water, jam, juice, meat, wood, milk, Coca-Cola, sugar, paper etc.
Choose the correct group: a, an or some.

• Группы
  • some
  • a
  • an
• Варианты
  • water
  • dolphin
  • orange
  • sugar
  • cheese
  • meat
  • money
  • bread
  • coffee
  • butter
  • milk
  • jam
  • flag
  • shirt
  • doll
  • sailor
  • apple
  • ant
  • umbrella