1.【原句再现】Visit our ticket office and buy one of the travel cards that permit you to travel all over the underground system.. (P51)
【知识要点】permit/ allow
【诊断练习】用permit, allow的适当形式填空。
①The teacher does not ________ students to chew gum in class.
②Weather ________ , we will go hiking in the eco-balanced park .
③It takes about two hours to get to the office building, ________ for possible traffic delays..
