He has tried four times,but his teacher wants him to try --fifth _英语解答

He has tried four times,but his teacher wants him to try --fifth time
为什么填答案是a 而不是the

人气：161 ℃　时间：2020-05-20 11:36:59

解答

他已经试了4次,他还想再试第五次.不是特指the , a + 序数词 = another