We played two draws the other day,but when I tried ---- thir

选B.
语法有一条：序数词前面一般加定冠词表示“第……”之意,但在second、third等词前加不定冠词表示“又一,再一”之意.
…why you took a second arrow
注意：下 句中“a first”表示“第一名、冠军”.
He is a top student in our class,he often gets a first in maths.
所以这道题选B,意思是：几天前我们两次打成了平局,但当第三局的时候,我被打败了