Dave and Anna are my friends.(改为一般疑问句)= Are Dave and Anna your friends?and是否改为or?

问题描述:

Dave and Anna are my friends.(改为一般疑问句)= Are Dave and Anna your friends?and是否改为or?

不需要! 这里的Dave and Anna是作为一个整体出现的,不同于其他的情况.