___the windows before you leave the classroom.A.To close B.Closing C.close D.Closed

问题描述:

___the windows before you leave the classroom.
A.To close B.Closing C.close D.Closed

C 祈使句用动词原形

选c close
这是一个祈使句,用动词原型开头,意思是,在你离开教室前要关上窗户.