同学们经常会遇到这样的题目: The door is ___, there must be someone in the room. A.opened B. opening C. open D. opens — How cold! What happened? — The door was ___ by papa. A.opened B. opening C. open D. opens 3.The door is ___, the staff are having a meeting. A. close B. closing C. closed D. closes ___ the door