______ all of us who are here tonight, I would like thank Mr. Brown for his talk.
 
【正确答案】 A
【答案解析】 “On behalf of”意为“代表”;“On account of”意为“因为,由于”;“In honor of”意为“向……表示敬意”;“In terms of”意为“依据,按照”,根据语境可知,只有“On behalf of”符合句意,故选A。