1．我到达火车站时，火车早已开走了。
   By fhe time I got to the station, the train________ _______ _________．
2．他已经意识到自己出错了。
    He realized that he________  __________ a few mistakes.
3．在聚会结束时他才到场。
    He didn't __________ __________ until the party was over.
4．我等着他出来，但是他从后门走了。
    1 waited for him to __________  __________ ，but he left through the
back door.
5上个星期六晚上，汤姆邀请我去参加他的生口聚会。
    Tom___________me_____________his birthday paity last Saturday
night.