A问题是:你去哪里了?a。我应邀去了晚宴。b。have been 是现在完成时,表明已完成的动作对现在还有影响,但事实上invite只是一个瞬间动作,不能延续,因此错误。
a- have been- already attended but it does not suit this sentencewas- indicate past
A