___ you or your sister in the room just now

问题描述:

___ you or your sister in the room just now
是填are were 还是 is
为什么

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.