our head teacher sitting on ()chair near ()door,asked us to try it ()time
问题描述：
our head teacher sitting on ()chair near ()door,asked us to try it ()time
A:the ,a,the third B :a,a,a third C:a,the,a third D:the,the,the three
答
C,
a third 译为”又一,再一”表示已经试过两次了了,现在是第三次．
序数词（first,second,third,fourth－－）前加a/an意为”又一,再一”
例句：I`ve read the book a second time.这本书我又读了一遍.