Soon all the people at the meeting on the discussion of developing the
local education.
A. collected
B. concentrated
C. agreed
D. concerned
网友回答
A. collected
(答案→)B. concentrated
C. agreed
D. concerned
解析：考察动词词义辨析。A收集（及物动词）；B聚焦于，集中注意力；C同意；D担心；concentrate on注意力集中于…；句意：很快，会议里的所有人都集中注意力在发展当地的教育的讨论上。根据句意说明B正确。