With a tag:Everybody is having a terrific time, ______?

With a tag:
Everybody is having a terrific time, ______?
【正确答案】：aren’t they/ isn’t he
【题目解析】：陈述部分的主语是everybody，everyone，anybody，anyone，somebody，someone，nobody，no one，none，neither等时，反义疑问句的主语用they或he均可。