most of them, most of whom, most of those, was, wereThe foreign

most of them, most of whom, most of those, was, were
The foreign guests,____ were government officials,____ warmly welcomed at the airport.
【正确答案】：most of whom/ were
【题目解析】：本题考查定语从句以及主谓一致。【要点透析】在定语从句中, most of后面接的是whom引导的定语从句,构成主从复合句,whom也作of的宾语。由于主语是 The foreign guests,所以第二个空用复数形式。