Unit 7: Urbanization. Lesson 2.2: Grammar. Pages: 79&80

Unit 7: Urbanization. Lesson 2.1: Vocab & Listening - pages: 78&79

Unit 5: Lesson 1.2: Grammar - pages 51 & 52

Unit 5: Lesson 1.1: Vocab & Reading - pages 50 & 51

Unit 4: Lesson 1.1: Vocabulary & Listening - Pages: 39&40

Unit 4: Lesson 1.2: Grammar - Pages: 40&41