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2028 online multiple-choice and fill-in-the-blank countable uncountable exercises across 101 tests provide a wide range of sentences to help you grasp the context and usage/formation of the countable nouns vs uncountable nouns. Prepare for exams, practice countable nouns vs uncountable nouns online and verify your answers immediately. Expand your English grammar proficiency with interactive countable or uncountable (plurality) nouns activities. Suitable for kids, adults, ESL learners at the beginner, elementary, and intermediate levels.