I am for your proposal that the discussion about future plan (

I am for your proposal that the discussion about future plan ( ).
A、to be put off
B、be put off
C、should put off
D、was put off
【正确答案】：B
【题目解析】：考核虚拟语气 proposal that 从句用should +v.或者是v.，句子含义为我赞成你的建议，关于将来计划的讨论要推迟。