... summerb. summer c. fallc. fall The weather The seasons Unit 13. Activities and the seasons Period 79. Lesson 1: A1, 2I. New words: Unit 13. Activities and the seasons Lesson 1: A1, 2I. Vocabulary:II. ... tiếtấm áp2. Summer (n) :3. Fall (n): 4. Winter (n):5. Season (n): 6. Weather (n):7. Warm (adj): Unit 13. Activities and the seasons Period 79. Lesson 1: A1, 28. Cool (adj): Mát mẻ 2. ... words: Unit 13. Activities and the seasons Lesson 1: A1, 2I. Vocabulary:II. A1, 2:1. A1: Listen and repeat ...