一道英语选择,不确定是不是多选there'aren't enough chairs here for us all please bring____one.A.another B.extra应该前面有一个an才对吧?

问题描述:

一道英语选择,不确定是不是多选
there'aren't enough chairs here for us all please bring____one.
A.another B.extra
应该前面有一个an才对吧?

答案选A,

A.
b不对的,有AN也不对

A,没见过B这样的搭配