They put forward a lot of plans at the meeting none of were carried out in their work.A.

问题补充：

They put forward a lot of plans at the meeting, none of were carried out in their work.

A. which

B. them

C. what

D. that

答案：

(答案→)A. which

B. them

C. what

D. that

解析：考查定语从句。先行词a lot of plans为物，指物的引导词做介词宾语时，只能使用which，故选A。