All the books donated by the students from urban schools are said to the students in rura

问题补充：

All the books donated by the students from urban schools are said to the students in rural areas the other day.

A. to be sent

B. being sent

C. having been sent

D. to have been sent

答案：

A. to be sent

B. being sent

C. having been sent

(答案→)D. to have been sent

解析：考查非谓语动词。从语法可知， be said 后面要接“不定式”，故排除B 项和 C 项，同时语意表示“捐的书几天前已被送往农村学生的手中了”，且send 和books 之间为动宾关系，故应用动词不定式的完成式的被动语态。答案选D 项。