___ you or your sister in the room just now是填are were 还是 is 为什么
问题描述：
___ you or your sister in the room just now
是填are were 还是 is
为什么
答
were.
先看just now， 这个时间语态要用一般过去时.
you 一般跟are,所以这里用are的一般过去时were.
答
were
答
1.填入：were
2.
1）时间状语just now意思是“刚才/不久前”,所以句子必须使用一般过去时,就可以排除are/is了；
2）or引导并列主语是,动词的数采用就近原则,即该题中的be动词必须和you保持一致,所以也只能用were了.
答
were
就近原则。离be动词最近的是you，所以要用are，加上后面说了just now，所以是过去式