Unit 8 Thats my book. Lesson 1B Listen and say 播放 暂停 Look and sayC Read and label School bag ruler pencil case pencil rubber bookD. Listen and circle. Then say. 播放 暂停注 意E Listen and act 播放 暂停E Listen and act This is my pen. That isnt your pen. Thats my pen. Sorry! Here you are! Thank you!Look and act This is my ruler. That isnt your ruler. Thats my ruler. Sorry! Here you are! Thank you!Look and act This is my pencil case. That isnt your pencil case. Thats my pencil case. Sorry! Here you are! Tha