四上 Unit 1 A;Lets talkSarah：Hey，Zhang Peng . We have a new classroom.Zhang Peng：Really? Whats in the classroom?Sarah：Lets go and see !Zhang Peng：Its so big !Sarah：Look ! My picture !Zhang Peng：Where is it?Sarah：Its near the window.B:Lets talkWu Yifan：Lets clean the classroom !John：OK.Wu Yifan：Let me clean the teachers desk.John：Let me clean the windows.Zhang Peng：Let me help you.Mike：Thank you.B:Read and write Where is the green book?It is
