I        Lily for three years.

根据提示填空（每空一词）
I____ ____(not finish) my homework yet.

根据提示填空（每空一词）
They were shopping at that time. (改为否定句)
They ____ ____ at that time.

用所给词的适当形式填空（每空一词）
I____ ____ (not go) to his party next weekend.

根据汉语意思完成句子（每空一词）
我相信她没有说谎。
I ____ ____ that she told a lie.

按要求完成句子，每空一词。
Twenty percent of our students do not exercise.
把上句加强语气为“百分之二十的学生根本不做运动。”
Twenty percent of our students do not exercise ____ ____.