concur (1) in the use of abbreviation a.与开幕式同时进行 ______ (2) with others in abstention b.赞同发言者的观点 ______ (3) with the plan of the gala c.在弃权问题上看法一致 ______ (4) with the opening ceremony d.同意庆典计划 ______ (5) with the speaker’s opinion e.在使用缩略语上看法一致 ______