most of the artists ------to the party were from south africa invited b had been invited

问题描述:

most of the artists ------to the party were from south afric
a invited
b had been invited

是b
b是过去完成时,看句子意思应该表达过去完成时的

b

a
b的话就有两个谓语 那么就缺一个连词了

a 做主语