--Is it true that he was hit by ___taxi?

问题描述:

--Is it true that he was hit by ___taxi?
一道英语冠词填空:
--Is it true that he was hit by a taxi?
--No.It was a bicycle that hit him,not ___taxi.
要理由,
144

a, 没有特指哪一辆.泛指,模糊