Unit 3: Irregular Plurals
Unit 6: Articles (a, an, the)
Unit 16: Subject and Predicate
Unit 18: Subject-Verb Agreement
Unit 20: Contractions (Short forms)
Unit 24: Listening Comprehension
Unit 25: Picture Description
Unit 28: Paragraph Writing
Unit 32: Dialogue Writing
Unit 33: Synonyms and Antonyms