根据短文内容从方框中选择恰当的单词填空，使短文完整、通顺。(短文由Unit2的课文改写而来)

right，here，six，it，behind

    Look!This is our school．There are buildings here．There is a library,an office building，a classroom building，a dining hall，a sports hall and a science building．This is our playground． is in the middle of the school．And this is our library．it is the office building．The classroom building is．The dining hall is on theof it．In front of the dining hall is the sports hall and the science building．