--Is it true that he was hit by a taxi?--No.It was a bicycle that hit him,not ___taxi.冠词填空

问题描述:

--Is it true that he was hit by a taxi?--No.It was a bicycle that hit him,not ___taxi.冠词填空
--Is it true that he was hit by a taxi?
--No.It was a bicycle that hit him,not ___taxi.
冠词填空,要理由,

--Is it true that he was hit by a taxi?
--No.It was a bicycle that hit him, not _a__taxi.
为什么?因为上文已经有了啊.