They put forward a lot of plans at the meeting but none of were carried out in their wor

问题补充：

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

A. which

B. them

C. what

D. that

答案：

A. which

(答案→)B. them

C. what

D. that

解析：考查代词。本句中them指代前文a lot of plans，本题下文前有连词but，不是定语从句。故选B。