523.On her next birthday,Ann ______ married for twenty years.
A.is
B.has been
C.will be
D.will have been
524.She was surprised to find the fridge empty;the child ________ everything!
A.had been eating
B.had eaten
C.have eaten
D.have been eating
523.答案是D;考查动词的时态；句意:等到下次生日的时候，Ann结婚将有20年了。将来完成时表示持续到将来某个时候的动作或状态。
524.答案是B;考查动词的时态；句意:她惊讶地发现冰箱里空空如也-她的孩子把里面的东西全吃光了！“吃光”这个动作发生在“发现”之前，前一句暗示了过去时间，应选择过去的过去。
