As a Chinese people ,do you have an idea that Japan illegally
（非法地） Diaoyu Islands since 1971?
A. is，occupying
B. is， occupied
C. had， occupied
D. has been， occupying
网友回答
A. is，occupying
B. is， occupied
C. had， occupied
(答案→)D. has been， occupying
解析：考查时态语态，时间状语是since 1971，和现在完成时或现在完成进行时连用，Japan和occupy是主动关系，用现在完成时进行时的主动式，句意：做为一个中国人你知道日本自从1971年就非法占有钓鱼岛吗？选D。