Lesson 7-Spring Sowing Warm. Contents I. Listening Materials I。 About the Author I工 Do You know? IV. Warming-up Questions V. Warming-up Activities W B T LELesson 7—Spring Sowing W B T L E Warm-up I. Listening Materials  II. About the Author  III. Do You Know? IV. Warming-up Questions  V. Warming-up Activities W B T L E