3.
读对话完成任务。
Mrs White: Boys and girls, we have a new classroom. Do you like it?
Jack: Yes, we do. It has two big blackboards and three windows.
Mary: And it has four lights and six pictures.
Mrs White: After school, what should （应该） we do?
Jack: Close the window.
Mary: Clean the blackboard.
Mrs White: You're so good.
(light).
