they aren‘t brother and sister,（ ）填反意疑问句 为什么是are there 还是are they?
问题描述：
they aren‘t brother and sister,（ ）填反意疑问句 为什么是are there 还是are they?
they aren‘t brother and sister,（ ）填反意疑问句 为什么是are there 还是are they?为什么 急
答
是are they,因为句子里写的就是they.