Cathy is taking notes of the grammatical rules in class at Sunshine School,where she English for a year.
A. studies
B. studied
C. is studying
D. has been studying
网友回答
A. studies
B. studied
C. is studying
(答案→)D. has been studying
解析：现在完成进行时表示动作从过去某一时间开始,一直延续到现在,可能还要继续下去。根据所提供的情景“Cathy is taking notes of the grammatical rules in class at Sunshine School”和时间状语for years可判断出要用现在完成进行时,表示动作一直在延续着。一般现在时表示经常性的动作或存在的状态。一般过去时表示过去发生的动作或存在的状态。现在进行时表示正在发生的动作或存在的状态。