Completion count: 892
300 online multiple-choice and fill-in-the-blank past perfect continuous negative exercises across 15 tests provide a wide range of sentences to help you grasp the context and usage/formation of the past perfect continuous tense negative form. Prepare for exams, practice past perfect continuous tense negative form online and verify your answers immediately. Expand your English grammar proficiency with interactive past perfect progressive tense negative form (hadn't been -ing) activities. Suitable for kids, adults, ESL learners at the beginner, elementary, and intermediate levels.