There have been many excellent questions recently regarding the new building proposal.
A. came up
B. brought up
C. built up
D. blown up
网友回答
A. came up
(答案→)B. brought up
C. built up
D. blown up
解析：came up 发生， up; brought up提出（议题等）；built up 建立；blown up 吹倒，句意是最近提出的很多很好的问题，将做为关于建筑的新的提议。故选B。