Teacher: What is this?
Student: It is a desk.
Teacher: What is that?
Student: It is chair.
Teacher: What are these?
Student: They are books.
Teacher: What are those?
Student: They are pencils.
老师：这是什么?
学生：这是一张课桌。
老师：那是什么?
学生：这是一把椅子。
老师：这是什么?
学生：他们是书。
老师：那是什么?
学生：他们是铅笔。