1. By the first day of August, 2007, the PLA has its ______ birthday.
A. eighty
B. the eightieth
C. eightieth
D. eighties
I think B is right。But http://www.examda.com/zhongkao/wyst/moniti/20071128/111137650.html it say
C is correct!
I don't understand! I hope that the expert help!

最新回复
红。 (2008-6-06 15:23:33)
序数词在句中作定语时常与 "the” 或 “物主代词” 一起使用,例如 on the eightieth floor;her eightieth birthday.
这道题划线处前已有物主代词 "its "了,所以不加定冠词 "the".
(欢迎大家指正~)
547548750 (2008-6-06 17:19:43)
547548750 (2008-6-06 17:20:54)
红。 (2008-6-06 19:40:20)
QUOTE:
...I don't know it clearly. I just read the regulations and did it yesterday. Maybe you can try to get in touch with Onion.