It can be proved that Diaoyu Islands part of the territory(领土) of China since ancient tim

问题补充：

It can be proved that Diaoyu Islands part of the territory(领土) of China since ancient times.

A. belong to

B. are belonged to

C. have been belonging to

D. have belonged to

答案：

A. belong to

B. are belonged to

C. have been belonging to

(答案→)D. have belonged to

解析：句意：我们能证明钓鱼岛自从古代一直属于中国的领土。这里使用了since ancient times和现在完成时连用，而且belong to没有被动语态，所以选D。