Professor Williams keeps telling his students that the future to the well-educated.A. is

问题补充：

Professor Williams keeps telling his students that the future to the well-educated.

A. is belonged

B. is belonging

C. will be belonged

D. belongs

答案：

A. is belonged

B. is belonging

C. will be belonged

(答案→)D. belongs

解析：考查短语：belong to 属于，没有进行时态没有被动语态，所以选D。