Are they preparing for the English evening last night?这句话对吗

问题描述:

Are they preparing for the English evening last night?这句话对吗

不能用are 。要用were.因为昨晚是过去式

A

错了,时间是Last night
昨晚,所以句子的时态应该是过时
Are 改为 Were
Were they preparing for the English evening last night?

不对。因为如果是昨天为英语夜做准备应该用过去式
Were they preparing for the English evening last night?